To check your fitness level, you should:
Take your resting heart rate.
Measure your heart rate during exercise.
Time a run of 1.5 miles.
Count how many pushups and situps you can do.
Do a sit-and-reach test.
Measure your waist circumference.
Calculate your body mass index.
Together, these activities gauge your aerobic endurance, muscular strength, muscular endurance, flexibility and body composition. Compare your results with established benchmarks to assess your fitness level.