Substitute to 531 to Do in Quarantine?

I train with 531. I have not been able to train for more than a month because of some small thing called COVID19. I am getting fat and weak. I am looking for a routine to be able to do with body weight inside my apartment. I do not have equipment even to do pull ups.
The maximum I could get is an equipment to rolling abs.

2 posts were merged into an existing topic: Home Workout Without Equipment?