You’re doing everything you did at 35, but your body does not feel the same. You go to bed at the same time and still wake up tired, your workouts leave you sore for three days, and your jeans fit differently even though your eating hasn’t changed. Estrogen and growth hormone both start dropping as you age. That’s why peptides for women over 40 are getting so much attention right now. A peptide is a tiny string of amino acids your body already u…