I’ve been on Letrozole 12 weeks now and managing ok so far. I walk daily for an hour and do gentle stretch/ balance class twice weekly plus now doing hydrotherapy Encore class once a week for 2 hours. I also take Caltrate Bone Health 2 per day and am on 6 monthly Prolia injections as was osteoporotic when I started Letrozole. Walking helps a lot with my head space and joints - I find I can walk thru the odd bits of joint pain .Only real problem I have noted is my usual very low cholesterol has more than doubled so am trying to be very vigilant with what I eat rather than statins which caused major memory problems after 6 months - I do take low dose aspirin daily too . My oncologist recommended krill oil for joint pain- have purchased but yet to need them.