Due to knees and shoulders, I cannot run or lift. The super simple Qi-gong is Stand on Stake aka Zhan Zhuang https://www.youtube.com/results?search_query=Stand+on+Stake
You will be sweating within 12 minutes
Maharishi TM mantras >>>> https://onhighroads.com/transcendental-meditation-mantras/
Thanks for the links. 🙏