I agree with most of what others have said especially walking. On top of that I’d recommend breathwork. It’s odd our society focuses so much on health and fitness in any areas but now how we breath. A recent study found that 5 minutes of breathwork or meditation has a signifinant reduction in stress.
Study: https://honehealth.com/edge/health/physiological-sigh-andrew-huberman/
Video from one of the guys who conducted the study: https://www.google.com/url?q=https://m.youtube.com/watch%3Fv%3DrBdhqBGqiMc&sa=U&ved=2ahUKEwid2uyujdL_AhUSCDQIHTkJB5sQFnoECAIQAg&usg=AOvVaw1h4Aoj5PyHbJtO3kuGflAX
It’s becoming pretty standard on the ‘mid tier’ specced mountain bikes. Anything with sram axs in the name. With that said the mid tier for mountain bikes jumped from 3-4k to 5-6k usd over the past few years.