What 20 Push-Ups a Day Does to Your Body

Описание: Everyone says do 100 push-ups a day. Nobody has ever tested that. Here's what actually happens inside your body when you do 20 push-ups a day, from the very first rep to ten years out, and why 20 is the number worth starting with.

⏱️ Chapters
0:00 The 100 push-ups myth
0:41 The first push-up
1:20 The first set (and why 20)
2:06 The next morning
2:46 Week two
3:47 Week four
4:32 Week eight
5:29 Ten years
6:28 Is 20 the right number?
7:12 What's next

This video is for education and entertainment, not medical advice. If something hurts, or you have a health condition, talk to your doctor before changing your routine.

📚 SOURCES

▸ The first push-up
• How much of your weight your hands hold: Suprak et al., J Strength Cond Res, 2011. https://doi.org/10.1519/JSC.0b013e318...
• Muscles used in a push-up: Youdas et al., J Sport Rehabil, 2020. https://doi.org/10.1123/jsr.2019-0381
• Push-ups vs bench press muscle activity: Calatayud et al., Phys Sportsmed, 2014. https://doi.org/10.3810/psm.2014.11.2097

▸ The first set (and why 20)
• Light vs heavy loads, both taken to failure: Schoenfeld et al., J Strength Cond Res, 2017. https://doi.org/10.1519/JSC.000000000...
• Push-up test in 31,596 adults, the typical healthy adult did 19 (part of a bone health study): Liu et al., J Bodyw Mov Ther, 2025. https://doi.org/10.1016/j.jbmt.2025.0...

▸ The next morning
• Why soreness is smaller the second time: Hyldahl, Chen & Nosaka, Exerc Sport Sci Rev, 2017. https://doi.org/10.1249/JES.000000000...

▸ Week two
• Small daily dose vs the same total once a week (Japan/Australia lab): Yoshida et al., Scand J Med Sci Sports, 2022. https://doi.org/10.1111/sms.14220
• One 3-second effort a day for 4 weeks: Sato et al., Scand J Med Sci Sports, 2022. https://doi.org/10.1111/sms.14138

▸ Week four
• 5 minutes a day at home for 4 weeks: Kirk et al., Eur J Appl Physiol, 2025. https://doi.org/10.1007/s00421-025-05...
• 4 weeks of push-up training (stronger, not bigger): Kotarsky et al., J Strength Cond Res, 2018. https://doi.org/10.1519/JSC.000000000...

▸ Week eight
• Push-ups vs bench press over 8 weeks (Japanese study): Kikuchi & Nakazato, J Exerc Sci Fit, 2017. https://doi.org/10.1016/j.jesf.2017.0...
• Muscle growth across different loads: Lopez et al., Med Sci Sports Exerc, 2021. https://doi.org/10.1249/MSS.000000000...

▸ Ten years
• Push-ups and heart events in 1,104 firefighters (Harvard): Yang et al., JAMA Network Open, 2019. https://doi.org/10.1001/jamanetworkop...

▸ Is 20 the right number?
• Push-up variations and force on the hands: Ebben et al., J Strength Cond Res, 2011. https://doi.org/10.1519/JSC.0b013e318...
• Strength training and risk of early death (30 to 60 min a week): Momma et al., Br J Sports Med, 2022. https://doi.org/10.1136/bjsports-2021...

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