Regarding staying active . I  take short walks daily . I am looking into water aerobics and I have done light yoga. I have done qigong which if I kept it up would be restorative . I lack discipline ! I rest when I feel tired for short periods. Getting a good night sleep is important.  I take vitamins : prescription potassium , vitamins c,calcium, D3,and B3 for my skin . B12 would be good too, but I have time for only so much ! Best medicine for me - laughter....and I am a painter. The creative process is vital for me . I work to stay positive .   I hope these ideas are helpful.