I have a different perspective for TS. I'm a little older but I would say the heave been time where 4 to 5 days a week was an option and times where 4 to 5 times a month felt impossible. If TS enjoys it and gets into it he can adapt his time to do more. For example, how much TV do you watch TS? For every 2 hours.of TV you watch you just.missed an opportunity to train. Now if you never start you are.not.missing anything. But.if.you start and like it and keep that in perspective maybe you will train once a week. Then twice a week. If.you are more enjoyable to be around cause.you found some passion. Maye.your wife encourages you to.do it more cause it means when you are home your better to be a round and you are more focused on the family.I started at 29, but trained 5 to 6 days a week for like 2 years, till my body started to break down.
No, 3 times a month is not worth it if you want to ever get good. 2 to 3 times a week, yes.
TS how many fights do you get into a year?he will learn techniques, he wont be able to apply them live, in like... for ever... thats the problem.
3 times a month is not enough, no matter how much cardio he does, he wont get better and is discouraging, hell end up quiting after 3 months of getting absolutely nothing out of his training.
better stick to Running or some other activity, which will be beneficial for his health as well.