If you ran for 45 minutes and never felt anything, you really weren't running.
You can get a good workout in less then 45 minutes. It 's all about how you train.
Onto the theory about why you should workout.
In todays society, somebody actually arguing why you don't need to work out, thats just plain stupid.
Besides the self-confidence gained by some, besides the hope to bulk up or tone down, any form of exercising and eating healthy can have a drastic effect on PREVENTING
HIGH BLOOD PRESSURE, HIGH CHOLESTEROL, OBESITY, HEART DISEASE, CARDIO RESPIRATORY DISEASES, various joint and muscle related ailments, postural distortions and the list goes on.
IT's proven that any form of exercise can reduce your risks.
To say exercise is useless, is kind of stupid. No matter, whether you do strength training, cardio, reactive training, stretching, whatever it is you do to train.
Again, its a proven fact the exercising can improve your overall health.
Yeah for most people on this site, it probably doesnt matter because most are about 17 years old. Most dont care.
But fast forward 20 years.
37 years old isn't very old. Especially if you never did anything for most of your life to improve your health.