You may be wondering why fit people have higher quality (more rejuvenating) sleep compared to unfit people.
Again, it has to do with muscles. We’re all extremely busy, so everyone’s brain is tired by the time 11:00 p.m. rolls around. But here’s the sedentary person’s 11:15 p.m.
Deep sleep is triggered primarily by tired muscles. Sedentary people rarely have tired muscles. Want to enjoy deep, rejuvenating sleep every night? It’s a choice.