well with 3 acres and mowing ,trimming ,weeding ,grocery shopping ,laundry ,housework .trimming trees and repairs on house here and there and now ripping up old flooring and putting down new and I will be 67 this year .I think the hemp seed oil I take helps 100%.I repair my lawnmowers and am now building a new bridge and getting done with the wishing well .Plus I always get my neighbors asking me how to do this or that . .It never gets easier as each year passes .Believe me as you get older you will see .