Hello,
At the beginning, I did a 300 push ups a day challenge (in addition to the normal routine). I obtained very good results because I did them with full tension. So I maintained my bent press at more than 1/2 bdw without training it, got a far stronger front lever, and also better OAOL PU. It also helped my HSPU.
Then, I kept the idea and now systematically run either 300 "standard" push ups a day, or use other variations (slow motion, OA, OAOL, etc...).
In addition to the above, I do everyday 300 squats (either Hindu or standard, with bodyweight only).
Related to abs, depending on the day, Janda sit ups or standard sit ups with proper breathing to protect the lower back.
This morning, I did in less than 15 minutes:
(50 push ups - 50 sit ups - 50 squats) X 6, with no rest between exercises and rounds, using supersets. Very good feeling in terms of conditioning and endurance. Such high reps transfer pretty well to strength.
Here is Charlie Hunnam (King Arthur movie) training routine (basically dips, pull ups, push ups, squats and abs, done everyday with high reps):
Charlie Hunnam Workout Routine and Diet: From Jax Teller to King Arthur
In several interviews, he gave the same figures so information is checked. However, he insists on a very clean diet to get a proper body transformation.
Cutting carbs + high reps can tend to be efficient and worth trying.
I think it can be true and "real" (meaning without any steroids or so) because in France, there is a training method called "Methode Lafay" (Lafay's Method in english) which is based on high rep sets with low reps. This begets this type of physique, very lean and athletic, but also quite strong and powerful.
Kind regards,
Pet'