Simple? Yes.
Easy? Depends on one’s training and current body situation.
For someone who can do 25+ reps in a single set, it’s a physically doable mental challenge.
Those of us who can’t do 5 in a set, 500 in a day is an impossible feat.

Kudos for attempting. 
Don’t injure yourself by attempting something your body hasn’t trained for.
Do 500 Wall Pushups, and you will understand the Boredom Conquering Challenge that this is.

Try and grasp the mentality behind this exercise. It is not limited to fitness, pushups, or 500 reps.
There are several useful principles. From “doing the doable, but boring things, that can make a difference” to “choosing one challenge every day, so every night you can go to bed feeling victorious.”

Personally, I’m considering “300 Reps Everyday for 30 Days” – with a menu of exercises. I think it’s a Stark thing to take on experimental challenges.
