How fast you can run a mile and the number of push-ups you can crank out aren’t just good for fitness bragging rights. They’re indicators of how well you’re aging.
Just like muscle mass and strength, your muscular endurance declines with age. To test your core's muscular endurance, perform a side plank with your feet stacked, knees locked out and one elbow on the ground. If you can hold it with good form for more than 45 seconds, you're above average.
Another way to test your aerobic fitness is to time yourself on a 1.5-mile (2.4-kilometer) run or jog. It's also enables you to examine a good fitness level based on age and sex.
Examine your fitness tests given by a qualified personal trainer. You might also find at-home options, such as the sit up test, pushup test, sit-and-reach test, and the 1.5-mile run.
There are online articles saying what the age-related norms are for these exercises for men and women but that is another fenominorm of the Health and wellness realism.