Michael Israetel@drmikeisraetelInstagram

The CINDY Workout // 20 min AMRAP 🔥👇️⁠ ⁠ Complete as many rounds and reps as possible in 20 minutes of:⁠ 5

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what it claims

Perform a 20-minute AMRAP (As Many Rounds As Possible) workout consisting of 5 pull-ups, 10 push-ups, and 15 squats to stimulate muscle development.

mixed

This workout, known as 'Cindy' in the CrossFit community, uses body weight to engage major muscle groups.

noli's read

This workout, known as 'Cindy' in the CrossFit community, uses body weight to engage major muscle groups. Sports science confirms that high-intensity circuit training can improve both cardiovascular capacity and muscular endurance (observational studies on HIIT-type protocols). However, presenting this exercise as an optimal method for hypertrophy (muscle gain) is an exaggeration. To maximize mass gain, scientific literature (meta-analyses on progressive overload) highlights the necessity of high mechanical intensity and progression in load, which becomes difficult with bodyweight training once a certain level is reached. The AMRAP format is excellent for metabolic conditioning, but less effective than traditional weight training for pure hypertrophy in advanced practitioners.

the sources

Claimed by Michael Israetel. Noli grades the claim, never the person.

Decoded by Noli · July 18, 2026 · the original post

What the graded evidence says

Evidence: B+

Effect: muscle hypertrophy and 1RM strength, low-load vs high-load resistance training — hypertrophy similar between low and high loads when sets taken to/near failure; 1RM strength significantly favors heavier loads
Measured on: healthy adults, trained and untrained

Light loads match heavy loads for size only when sets are taken close to failure; for pure maximal strength, heavier loads have the edge, and body-weight training eventually needs harder variations to keep progressing.

Michael Israetel in the Register38 claims graded · solidity 96/100See their record →