Using simply body weight exercises is a superb way to develop incredible strength and stamina.
Such exercises can be demanding of both mind and body but will leave you feeling amazing!
Also no equipment is needed and for inspiration just take a look at these:

Such exercises can be demanding of both mind and body but will leave you feeling amazing!
Also no equipment is needed and for inspiration just take a look at these:
Street Workout In Russia and Ukraine ) - MadPanda.tv