Gym vs yoga

There are many ways to exercise without going to the gym. Exercise is not just about weight lifting and running on the treadmill.

Going on a walk regularly is exercise. Getting up and moving around more is exercise.

There is no certainty whether some forms of yoga are better than others, whether yoga should be prescribed to people for various health conditions, and how yoga compares with other forms of exercise. 

There's also no good evidence behind many of the supposed health benefits of yoga, ...

Some methods of psychotherapy and complex issues may take some time, but many interventions are shorter. Also, many choose to stay in therapy after the issue that brought them has been addressed to better understand themselves and their thoughts.