Our trick to help you master this super-impressive feat
Do More Pullups
Start by figuring out how many pushups you can perform with good form. This is your current max. Every two weeks, take two days off and then retest your max.
Workout 1: Monday, Wednesday, Friday
Perform four times your max number of reps, taking as long as you need to do so. It's OK if subsequent sets have fewer reps than your max.
Workout 2: Tuesday, Thursday, Saturday
Set an alarm to go off five times throughout the day (every two to three hours is fine). Each time it sounds, hit the deck and do two sets of pushups. The first set should just be your max number. Rest 45 seconds, and then perform the second set, trying to reach your max again, resting as little as possible until you do.