Standing exercises you can do at home

Exercise 1:

https://www.youtube.com/watch?v=Jbu_KNovRbQ&t=2s

Exercise 2:

https://www.youtube.com/watch?v=c3f5vDPC010&t=3s

Exercise 3:

https://www.youtube.com/watch?v=D-DQVyybfC0

Exercise 4:

https://www.youtube.com/watch?v=7v1t1wY77V0