I do the Five Tibetans, too, though not with utter reliability.
Notable effects: they get rid of lower back pain for me. They strengthen the muscles around my knees. I believe they're the reason I was able to fall safely when I slipped on some ice the winter before last. (Previously, when I fell on ice, I'd twist something and sprain it.)
Normally, I can do at least one of them better than usual. This cheers me up.
I'm inclined to think that by doing them slowly and/or doing fewer of them, you could avoid working up a sweat.
There's free information about the Tibetans online, but I strongly recommend The 10-Minute Rejuvenation Plan: T5T: The Revolutionary Exercise Program That Restores Your Body and Mind-- it's by a teacher who's taught 700 students, and has a good warm-up set and a lot of advice on modifying the Tibetans if you find them difficult.
An exercise:
Name something that you do not do but should/wish you did/are told you ought, or that you do less than is normally recommended. (For instance, "exercise" or "eat vegetables".)
Make an exhaustive list of your sufficient conditions for avoiding this thing. (If you suspect that your list may be non-exhaustive, mention that in your comment.)
Precommit that: If someone comes up with a way to do the thing which doesn't have any of your listed problems, you will at least try it. It counts if you come up with this response yourself upon making your list.
(Based on: Is That Your True Rejection?)
Edit to add: Kindly stick to the spirit of the exercise; if you have no advice in line with the exercise, this is not the place to offer it. Do not drift into confrontational or abusive demands that people adjust their restrictions to suit your cached suggestion, and do not offer unsolicited other-optimizing.
To alleviate crowding, Armok_GoB has created a second thread for this challenge.