Practicing nude yoga assists in achieving deeper spiritual connections. This is due to the enhanced accumulation of cosmic vibration (energy, prana, chi)
Fullness of breath provides benefits which extend beyond (general) oxygenation of the blood.
Osteoarthritis (OA) is not a death sentence. Is it hereditary? Is it trauma induced? Maybe both . . . or neither. What is important is that movement, strengthening and flexibility (SMF) be maintained so that operational procedures be avoided for as long as is possible
The concept of the four formless states (the four arupajhanas) was presented as a means of addressing those inner states of anger. The goal is to not struggle against the inner states. They are to be observed, accepted and resolved, on their own terms.