How long have push ups been an exercise?

How long does it take to get stronger by doing push ups

Okay so I want to get stronger in the arm, but every time I do push ups my shoulder pops. But I dont want to go to the doctor...

What's the difference between a girl push up and a guy push up? I know that guys are on their toes and girls on their knees, ...

if I do 30 sit ups and 20 push ups a day for 30 days, while eating small meals (healthy meals), how much weight will I loose?...

like will it work on the same mussels? because I herd if you do push ups you can get rid of bony elboes and I prefer my5LB w...

is there anywhere I can see all of the different types of pushups on picture or video?

I can barely do 3 push ups! im weak in the areas for push ups and I want to know what kinda of exercises should I do to build...

Okay so I got in trouble for using my phone during PE and the ROTC teacher took my phone and said he'll give it back when I ...

Can you tone your body without exercise :S And how long about so you reckon it would take to loose an inch of belly fat??

Ok well I'm starting 8th grade this yr and I don't know how to do a pushup I can't even do one and we have to do them in fron...