If middle-aged guys have been doing strength training, they don’t lose as much power when squatting after a tough workout compared to guys who haven’t trained — meaning regular lifting might help them stay explosive while recovering.

Middle-aged guys who lift weights don't bounce back as quickly after a tough leg workout as younger guys do — they're weaker and less powerful for a few days, even if they're just as trained.

For men who already lift weights, doing either high-intensity or high-volume workouts for 8 weeks didn't make a big difference in leg strength or muscle size.

Even if you’re already strong—squatting almost twice your body weight—adding more sets will make you stronger, but won’t make your muscles grow more than doing a moderate amount.

Even people in their 50s and 70s can get much stronger and activate their muscles better after 12 weeks of heavy weight training — age doesn’t stop them from improving.

If you lift weights until you can't do another rep during squats, you'll feel more tired and jump lower afterward than if you stopped before reaching failure—even if you did the same total amount of lifting. This drop in performance can last up to half an hour.