Push Up Pyramid!
Set 1 - 1 Push Up Set 2 - 2 Set 3 - 3 Set 4 - 4 Set 5 - 5 Set 6 - 6 Set 7 - 7 Set 8 - 7 Set 9 - 6 Set 10 - 5 Set 11 - 4 Set 12 - 3 Set 13 - 2 Set 14 - 1
Starts off easy but doesn't stay that way!