Here is the fact of push ups. I am Military. Doing push ups in a routine will indeed rip your body. You need to switch up your hand location on sets, and work different parts of your upper body, but you have to be consistent and push yourself every day. I started out after my injuries in the ARMY, with 100 a day, then 150, 200 and moved 3 days later to 300, then moved to 410 4 days later and now I do 500 a day. I have been at this for 3 weeks... I have burned so much fat already, and I look like I work out in a gym. Granted I have always been a big guy, but I haven't touch a weight in years. Now, 3 weeks into this and I look amazing already. My wife is amazed, my kids, and everyone that sees me gets that look in their eyes, of... Oh shit this is one big son of a bitch. My dentist, said to me yesterday, Man, you are just huge, you could kick my ass easily. This is a VA Dentist, younger then me, and fresh out of the Military. I just saw him 2 weeks ago and he said with in those two weeks, I look completely different. So, I have gained muscle mass, toned up and burned those fat deposits that men get in our upper body. All in 3 weeks. Spreading out the Push Ups over the course of the day in sets of 30, never less than 30 but sometimes 40. So can you get big, ripped and amaze yourself and others by doing just push ups? Yes, too easy but really hard. It works. Just be careful listening to fitness guys, they tend to think GYM, GYM, GYM always. Take it from a 45 year old who is in better shape then most 25 year olds by only doing Push Ups... you can do it.