What is physical fitness or what does it mean to be physically fit? To put it in technical defined terms, fitness is a set of characteristics that people need to be able to complete physical activities. Being fit is defined by what type of activity you do, how long you do it, and at what level of intensity you are working.
Important measures of fitness include cardiorespiratory endurance plus muscular strength and flexibility. You need to check out your body composition and your muscular endurance. If you can pass all these with flying colors you may be physically fit.
Cardiorespiratory Endurance or Fitness
To start with, cardiorespiratory fitness is the ability of your body to supply you fuel during physical activities. Utilize activities and exercises that maintain your heart rate at a safe level for a certain period of time. Use swimming, walking, or bicycling as your exercise of choice for cardio. You may find that you are having fun while exercising. Do start slowly with any activity and gradually work up to a high or more intense pace.