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.
tense torso and lower torso until just before the ground. Then push up again.

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

, Post results in the comments and now on Facebook and compare with other Men's-Health-readers! The Challenge, see Facebook.com/hashtag/mhwc