I've been doing the other hundred push up challenge now, 100pushups.com. more volume than hundredpushups.com as you do it every day and looks like more reps each day too, but spread through the day so that it feels pretty easy and doesn't make you sore. Makes you get up and do something every now and then. Every 7th day is a test of your max and then the sets are half of that. Takes some commitment to be at it several times a day every day though, but doesn't take much time. Can't say I'd had much results yet, but at least it's good to do something during work days.
When I was on uni exchange in bumfuck nowhere in Finland I used to do either 500 press-ups or 200 chin-ups a night, just to keep me sane. I was horrendously skint and the internet only worked if I put my laptop in the cupboard.
Fun times.
I've been doing the other hundred push up challenge now, 100pushups.com. more volume than hundredpushups.com as you do it every day and looks like more reps each day too, but spread through the day so that it feels pretty easy and doesn't make you sore. Makes you get up and do something every now and then. Every 7th day is a test of your max and then the sets are half of that. Takes some commitment to be at it several times a day every day though, but doesn't take much time. Can't say I'd had much results yet, but at least it's good to do something during work days.