One day, the grocery bags feel heavier. Getting out of a low chair takes a little more effort. Stairs that used to be no big deal start asking for a pep talk. That change can feel frustrating, but it’s also common. Muscle loss with age is real, and it has a name: sarcopenia. The good news is that muscle can often be rebuilt, even later in life. It doesn’t require a gym obsession or workouts that leave anyone wiped out. It usually takes a mix of strength training, enough prote