2 minutes up and down - but how often? In focus: triceps and chest

A. go into pushup position. Both hands under the chest position, so that the forefinger and thumb together form the diamond shape.
B.
tense torso and lower torso until just before the ground. Then push up again.

reps
level of performance
0-20 beginner
21-40 Intermediate
more than 40 professional

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