This topic is around the central focus and addiction of my life until marriage. But here's what probably is appropriate for you with appropriate warnings.
For what you're likely doing, every other day because you're not doing much. If you are trying to build muscle mass and sculpturing, you have to rip them. Can you endure pain? If so, every 3rd day. Do your other cardio and whatever in between. If you're going for max muscle mass you have to really tear 'em, likely your only good for that once a week, but back to light stuff ever other day in between so you don't stiffen up. You have to work your way up that for at least months or you'll tear and pull things you don't want to and healing is very long to never.
Watch your back. Easily injured. Particularly at first as you lack the muscles and will tend to then try to use your back.
Set your goals realistically low. A steady pattern is better than on and off.
Don't think weight training makes you tough in a fighting sense. It ain't junior high school out there, there are no refs, unless stick thin or WWF muscularly you have no clue who is tough. Even if the other guy isn't tough, you probably don't have a serious hurt someone instinct. Others do. So you throw a haymaker at his face and he tries to jab you in the eyes and throat. Most fights are decided in the first blow or end up wrestling on the floor for any but the very best. It only takes one blow to permanently hurt you or incapacitate you. Once you go down the other person can do exactly anything to you for as long as they want. Don't expect anyone to come to your aid. Even friends.
Point? Until you've been in the ring and hit about everywhere a few hundred times at least and in more than a few real fights - adult, not juvenile, you certainly can't be a tough fighter with any self predictability and if you go looking for trouble you'll find it. A better conflict tactic for you is run-away. No boasting or insulting here. Maybe pointless to you. But I've seen a lot of guys get a little tough and then very hurt.
Keeping in shape, putting on a little muscle, body building and sculpturing, mega body building and building fighter ability all are very different and each one requires a higher degree of self inflicted pain and then also pain inflicted by others. It is both a knowledge and pain ladder. Unless it becomes an addiction compulsion you won't go very high up it or for very long.
Keep it real. Make your muscles burn a little every two or three days and consider that more than most do or you will. You'll feel better about yourself if you do. But leave it at that. There is trouble for most people beyond that because the middle ground of toughest is the most dangerous. Better to accept the merits of avoiding and if necessary making a run for it. Seriously. Good luck to you.
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