You cannot be physically fit in the absence of exercise, even if you’re naturally on the thin side.
Physical health is synonymous with exercise.
Having an efficient cardiovascular system and strong joints come only with structured, rigorous workout sessions, not from luck or “good genes,” though the so-called good genetics come in very handy when pursuing a particular sport.
Strong muscles and bones typically result when a person has been carrying around a lot of extra body fat for a while, even if he or she doesn’t exercise.
The musculoskeletal system is forced to become strong to support all the excess weight.
But this kind of strength can also be achieved by a lean person who works out.
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Certainly you’d rather be strong because you work out, not because your body has been forced to carry excess fat around for years.
Never think that you don’t need to exercise because you’re “naturally” thin or because you think you look good in a swimsuit or certain clothes.
And very tall people need to exercise as much as average height people, and very short people need to exercise as much as average height people.
This is because height is not a factor in who needs to work out.
Every BODY needs to exercise: And it needs to be structured activity with rhyme and reason rather than haphazard movements that strain one side of the body more than the other.
If you do construction work for a living, or serve tables, are a nurse, a tree worker, roof worker or are a stay-at-home mother of seven kids under the age of 12, you STILL need to devote special time just for cardiovascular exercise and strength training workouts.
