The title of The Fixx’s 1982 hit “One Thing Leads to Another” is the perfect description of how intertwined health issues can become as you age, especially if you don’t commit to doing what it takes to have a younger ActualAge. A study in Clinical Rheumatology shows how having osteoarthritis (that affects about 32.5 million U.S. adults) and also developing sarcopenia, aka progressive loss of muscl…