Follow safety precautions to avoid hurting yourself or others.
Yes, you can hurt people badly in judo. That is why you must learn how to fall to avoid hurting yourself and your opponent.
Jump on their heads.
There is no way without hurting yourself because it will hurt
Why do I bruise without actually hurting myself
you can make yourself pass out without hurting yourself by.... not breathing well, fainting, or maybe even taking a medication you didnt know what it was that may have expired
You cannot cut yourself without it hurting. Do not continue to cut yourself, as it will just cause more damage to yourself. If you continue to cut yourself, seek the advise of your parents or a close friend.
Why not stop fooling yourself? You aren't happy with the guy, or you wouldn't have cheated on him to begin with. Take a realistic look at the relationship, and at yourself.
Indulge yourself sensibly and force yourself not to think about them. Keep busy and give of yourself a lot in public service. Part of forgiving yourself is recognizing that the situation is past. Just avoid confrontation with that person.
by exercising everyday