Guys, Ive been doing weightlifting for almost 2 years since I was in University until working..
In my room, i have a couple of dumbells, barbell, pushup bar, bench press and so on.
But lately I found that I dont have much time to follow my workout schedules. I always misses out my workout schedules..
The result, I became a BIT fat. Peoples around me cant tell the differences but I can tell because its my body.

Btw, my weight is 74 KG. Im a bit bulk and muscular type of body but not as muscular as hardcore bodybuilder.
Im working as a programmer which needs me to sit on a chair infront of laptop monitor from 10 a.m until 7.00 p.m. Only my mind and hands are working.

So, just let say that I dont want to continue doing weighlifting anymore, can I substitute it by doing pushup everyday since it doesnt require much time and I can do it before I go to work on d morning.

And can I just do pushup only to gain more muscles? If yes how? How many reps should I do everyday? How many sets?