Hank calls in a friend to do his push ups for him today to explain how skeletal muscles work together to create and reverse movements. Hank and Claire also demonstrate the role size plays in motor units, the three phase cycle of muscle twitches, and how the strength and frequency of an impulse affects the strength and duration of a contraction. This episode also explains twitch summation, tetanus, and isotonic vs. isometric movements.

Pssst… we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!

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Table of Contents
Skeletal Muscles Work Together to Create and Reverse Movements 1:14
Motor Units 3:52
Three Phases of Muscle Twitches 4:41
Strength and Frequency of Impulses 5:29
Strength and Duration of a Contraction 5:29
Twitch Summation vs Tetanus 6:19
Isotonic vs Isometric Movements 8:50

***

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***SUBBABLE MESSAGES***

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***SUPPORTER THANK YOU!***

Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever:

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Would You Rather fitness fun! Great activity for the whole family. Excellent brain break activity ! Find more activities @Fix and Play ​

Do this 10 Minute BEGINNER AB WORKOUT daily! Follow along with me in this easy home workout routine.
Do this ab workout DAILY OR EVERY TWO DAYS until it (Level 1 ABS) becomes easy and then you progress to Level 2.
.
00:00 Intro
00:30 Jackknives
01:30 AB Crunches
02:30 Scissor Kick
03:30 Heel Touch
04:30 Low Plank
05:30 Side Tucks 1
06:30 Side Tucks 2
07:30 Bicycle Kick
08:30 Side Plank 1
09:30 Side Plank 2
10:00 Outro
.
LEVEL 1 – 4 AB WORKOUT INSTRUCTION
——————————————————————
For the 4-level AB workout program, you want to start at Level one and do that every two days. At the end of each week, determine if the level you’re currently doing has now become easier. If it hasn’t, stay at that level but if it has, then you move on to the next level. Repeat this until you can complete level 4 easily.
.
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Level 2 ABS 7 Minute Intermediate AB Workout

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AB WORKOUT FOR BEGINNERS (3 SECTION AB WORKOUT!)

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SUBSCRIBE: http://bit.ly/SUBJoannaSoh | Follow my IG: https://instagram.com/joannasohofficial/

Strength Training does not mean lifting weights! You CAN strength train using only your BODYWEIGHT. This workout is low impact and great for beginners too. SUBSCRIBE for new videos every week: https://www.youtube.com/user/joannasohofficial SHARE your fitness pictures, tag me @JoannaSohOfficial #JSohActive

♥ Joanna is a certified Personal Trainer (ACE), Women’s Fitness Specialist (NASM) and Nutrition Coach.

Filmed at Be Urban Wellness: http://beurbanwellness.com

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________________

This is a total body STRENGTH TRAINING workout which can you do anywhere! The goal is to complete all 4 circuits in the shortest time possible.

Exercises:
1) Prisoner Squats
2) Wide to Narrow Pushups
3) Forward to Back Lunge (right)
4) Forward to Back Lunge (left)
5) Tip Toe Sumo Squats
6) Superman to Plank
7) Cross Plank
8) Knee Tucks

Total Time: 20 – 25 minutes
Sequence: 4 Circuits
Repetitions:
Set 1 – 20reps
Set 2 – 15reps
Set 3 – 10reps
Set 4 – 5reps

To progress:
– Choose the advance option.
– Complete the workout in the shortest time possible, try to take shorter breaks in between,
– Lift some weights to make the exercises tougher or add jumps.

________________

MORE WORKOUT VIDEOS TO GUIDE YOU THROUGH YOUR JOURNEY
–
10,000 Squat Challenge in 30 Days

–
Beginner Fat Burning Morning Workout

–
How to Lift Dumbbells to Lose Weight (Gym Training)

–
Burn Back Fat & Bra Bulge (4 Exercises)

–
Kickboxing to Lose Flabby Arms / Bingo Wings (No Equipment)

–
4-Week Toning Butt & Abs Challenge

–
Gentle Morning Yoga Stretches to Feel Energized

–
30-Minute HIIT Yoga for Slimmer Legs

–
30-Minute Beginner HIIT Yoga for Stronger Core

–

Here’s the complete playlist to more than 50 videos:

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We have over 700 muscles but you can divide these muscles into three main types, skeletal, cardiac, and smooth and make up our muscular system.

We have differentiated notes that go along with this video and a power point
https://www.teacherspayteachers.com/Product/The-Structure-and-Function-of-the-Human-Muscle-3985114
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A 30 MINUTE APARTMENT FRIENDLY Workout – No Jumping, No Equipment, No Repeat! Low Impact does not mean low Intensity – This Workout will burn calories and fat + strengthen and tone your Muscles ♥︎ I hope you enjoy working out with me and the TEAM and most importantly HAVE FUN!

Please remember that we are all different and that you can make this your own workout ♥︎ Take a longer break when you need to.

▸ Workout Focus: Cardio, Muscle Toning
▸ Time: 30 Min + 5 Min Warm Up
▸ Equipment: NO EQUIPMENT

▸ Workout Instructions: Follow along and complete as many reps as possible in 50 Seconds. After 10 Seconds of Rest continue to the next move.

▸ Join the OFFICIAL TEAM GROW Community Group:
www.facebook.com/groups/teamgrowsupport/

Please remember that we are all different and that you can make this your own workout ♡ Take a longer break when you need to.

▸ The Workout:
1. Warm Up 0:00 – 05:20
2. Workout 05:21 – 35:08

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D I S C L A I M E R

If you are a newbie start with a simple and easy exercise before attempting all advanced exercises. Performing exercises out of your capability might strain your muscles and you may get injured.

This channel offers health, fitness and nutritional information. You should not rely on this information as a substitute for, nor does it replace, professional medical advice, diagnosis, or treatment. By performing any fitness exercises without supervision like with this video, you are performing them at your own risk. See a fitness professional to give you advice on your exercise form. Growingannanas will not be responsible or liable for any injury or harm you sustain as a result of this video.

a 20 min fat burning, full body workout you can do at home without any equipment! A workout designed for TOTAL BEGINNERS! Wether you are just getting into fitness, or are getting back in the fitness game… this one is for you!
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⭐️ COOL DOWN (5 min): https://bit.ly/3hqWdbf

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Visit: https://www.heatherrobertson.com

Today’s full body strength workout is intense! We are completing each strength exercise 4 times before moving to the next. These multiple sets will help you build lean muscle and strength which in turn will help you burn fat faster. Grab those weights and dive into today’s strength training session woot woot!!

Warm Up: https://youtu.be/rzrpvmHDKlg
Cool Down: https://youtu.be/jBCFeBynDF0

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______________________________

D I S C L A I M E R

This is my own personal workout and may not be suited for you. It is strongly recommend that you consult with your physician before beginning any exercise program. By engaging in this exercise or exercise program, you agree that you do so at your own risk.

______________________________

Thanks for watching!

❤ Heather
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Why do our muscles get tired and sore after exercise? Explore how our muscles function, and how you can exercise longer without experiencing muscle fatigue.

—

You’re lifting weights. The first time feels easy, but each lift takes more and more effort until you can’t continue. Inside your arms, the muscles responsible for the lifting have become unable to contract. What’s going on? Christian Moro explains how exactly our muscles operate, and what causes them to become fatigued.

Lesson by Christian Moro, directed by Nichola Latzgo.

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View full lesson: https://ed.ted.com/lessons/the-surprising-reason-our-muscles-get-tired-christian-moro

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Ninja Nerds,

In this lecture, Zach Murphy, PA-C will present on the embryology and development of the muscular system. These will include the muscles of the axial and appendicular skeleton. Please enjoy this lecture and be sure to check out all of our social media pages and ways to donate below!

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DOWNLOAD ANY OF MY FREE TRAINING GUIDES ⬇️
https://www.lwrfitness.com/free-chall…

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I am here for you are your qualified online trainer to get you the best results.
Click here to see some of my incredible Progress Pictures and Stories:

Before & After

#homeworkout #7minuteworkout #7dayweightlosschallenge
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HI babies! Here is an EASY workout that you can do in 7 minutes. You can do half this workout in bed, there is no jumping here so it is an apartment friendly workout as well! Let’s do this lazy girl workout💕
♡ SHOP MY VERY OWN SUPPLEMENT LINE X WOMENS BEST – with amazing flavors such as Pina Colada, Mojito, and Raspberry Sorbet! SHOP HERE: https://Womens.Best/Shop-Vicky

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IMPORTANT DISCLAIMER: Vicky Justiz is a NASM Certified Personal Trainer. She strongly recommends that you consult with your physician before beginning any exercise program. You should be in good physical condition and be able to participate in the exercise. Vicky Justiz is not a licensed medical care provider and represents that she has no expertise in diagnosing, examining, or treating medical conditions of any kind, or in determining the effect of any specific exercise on a medical condition. Some titles and descriptions may include certain SEO keywords that may be perceived as misleading or may be perceived as a guaranteed result. Results vary from person to person and a video title / description should not be taken as an absolute truth.
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If you only have half an hour available everyday and you want a good and effective workout to help you lose weight at home – then this routine is for you!

This workout contains simple bodyweight exercises that doesn’t require much space or additional equipment.

Just press play, and start the workout! The trainer will count the reps for you and show you how to do the exercise, and what exercise follows next!

Good luck and leave me a comment below, tell me if it’s easy or hard for you!

Make sure to subscribe to receive home video workouts 3 times per week! ❤️💪

Lose belly, waist and abs fat in 7 days with this belly fat loss 5 minute home workout. These abs and waist exercises will target your stomach, show you how to burn belly fat to help with fat loss from home. Are you ready to get a flat stomach and get rid of fat at home? Do this consecutively with good nutrition for 7 days to start to see results. Beginner modifications included. No equipment needed.

Click here to download your free home workout programs:
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0:00 Lose Fat Home Workout Introduction
0:09 Abs Home Workout Results
0:26 Lose Belly, Waist & Abs Fat Home Workout
5:30 You Made It

Please remember that we cannot spot reduce fat, meaning we can’t choose the areas on our body where we loose fat. However to get fat loss results I recommend the following
1. Being in calorie deficit
2. Cardio/ HIIT workout (I often call these Fat Loss/Burn workouts on my channel)
3. Specific muscle targeted workouts. To strengthen and develop specific muscles.
The key to achieving your fitness and health goals is consistency and healthy lifestyle changes, without restriction. I don’t believe in crazy fad diets. Simply eat nutritious food, move your body, smile and enjoy the journey! Love Lilly

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Weight Loss Tips: https://www.youtube.com/playlist?list=PLyP8pbBMxcsjSQjf_2V8ZJku_njMfh_Zm

Weight Loss Meal Plan & Recipes: https://www.youtube.com/playlist?list=PLyP8pbBMxcsiVZKn2idlOzVppEmkQuXBp

Abs & Core Workout: https://www.youtube.com/playlist?list=PLyP8pbBMxcsi0MwwHzR5tWUjphLt7vt5q

Crazy Workout Challenges: https://youtube.com/watch?v=g83v1m2P4_g&list=PLyP8pbBMxcsgw079OkBK0o-sjKzX4qE0Jm

35-Minute Total Body Strength Training with Dumbbells | Joanna Soh

In order to get stronger, lean up and lose weight, you have to lift weights! Strength training will NOT make you bulky, but rather it will help to increase your metabolism, making your body burn fat more efficiently and to give you that toned and sculpted look. I perform strength training at least 3 – 4 times weekly and you should too.

This workout is a total body strength training using a pair of medium weight dumbbells, between 4 – 5kgs each. If you can lift heavier, then do choose a heavier pair of dumbbells to challenge your muscles. The technique used in this workout is called SUPERSET, that means we will be doing 2 exercises back to back with minimal rest in between. We’ll be targeting your legs, butt, arms, chest, back and also abs! This workout is mainly low impact, with a short cardio blaster at the end of each circuit to drive your heart rate up. Only 35 minutes, but you’ll be getting a solid full body workout!

Circuit: 6 rounds, repeat each round twice.
Sequence: 40 secs Work – 20 secs Rest
Duration: 35 minutes

SUPERSET 1
1) Goblet Squat
2) Curtsy Lunge
Cardio: Squat Jump

SUPERSET 2
1) Hammer Curl to Shoulder Press
2) L Raises
Cardio: Punches

SUPERSET 3
1) Glute Bridge
2) Kneeling Hip Thruster
Cardio: In-Out Squat

SUPERSET 4
1) Push-ups with Shoulder Tap
2) Bridge Pullover
Cardio: Lateral Shoot Through

SUPERSET 5
1) Renegade Row
2) Superman Squeeze
Cardio: Skaters

SUPERSET 6
1) Full Crunches
2) Plank Arm Raise
Cardio: Mountain Climbers

________________

Record a video or take a picture of you doing the workout, tag me @JoannaSohOfficial #JSohActive

I’m a certified Personal Trainer (ACE), Women’s Fitness Specialist (NASM) and Nutrition Coach, with over 10 years of experience.

Stay connected and follow me:
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35-Minute Total Body Strength Training with Dumbbells | Joanna Soh

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