Bodyweight exercises are amazing for so many reasons.

1. They require no equipment.
2. They develop real, functional strength.
3. They can be down anywhere in any space.
4. They use multiple muscles groups at a time.
5. Can be easily modified or ramped up by changing your speed.

https://youtu.be/PaP-D_kizqY?list=PLCn9WHaIa4vTXszSW59J55PLDtOeN3R_a