According to Minimum Production Value, Doing pushup every can test my persistence, a crucial character. With persistence, I have confidence to complete anything, however hard it is. Why? Just like doing integration, divide the thing into tiny pieces, thus daily task is not such a burden. And just keeping for one month will make huge difference. There is an old Chinese saying: one produces two, two produce three and three produce everything. Doing daily pushup is a footstone.

Besides, this is a good way to exercise body, especially brain. Nerves in brain are as same as those in body. Therefore, strong body will enhance brain power and vice versa.

Bottom line, Benefit Matrix of pushup:

Minimum 

test persistence

Other

strong body

improve confidence

ready for emergency