@moriifps_ Pick one or two, three at the same time is just too much unless you have plenty of free time, but then you should also be prepared for burnout. You can always decide to pick up the other hobbies at a later time.
@Styxified okay, well I haven't had that happen to me before but whenever I'm in a similar situation I like to write down my thoughts, with hopes to get to know the cause, and meditate (eyes closed, slowly breathe in and out to reduce stress), hopefully that can reduce your body going crazy