Odd question! But! I use a vibrator rabbit for masturbating and only with my right hand. When I orgasm, obviously it's quite nice, but I wonder if me using it only on one side is causing a muscular imbalance where my muscles in my arm and also my back midsection are stronger. Only because I experience left knee pain the next day and wonder if my muscle tension makes me imbalanced and puts pressure on me knee. Thank you anybody who can help!!!👍🏻👍🏻👍🏻. Also, sometimes I wonder if masturbating is bad for me. I look so worn out and de-energized afterwards, and I am so sleepy. I don't want my chi to escape me. It may sound silly, but I have a worry about this. Thank you all again and I really appreciate it. 🙂