The circumstance. i don't like the circumstance when i massage outside, it feel weird. That just personal problem, but massage chair is quite comfortable for me, you can get a massage at home and do the other thing you want. Really enjoy! When i back to home after work, i like spend 20-30 min on massage chair and listen my favorite music, it really relaxing me, that is the moment my stress and my tension gone. Then, energy come back.