Yes our bodies have evolved to be amazingly athletic. The original method humans are thought to have used to hunt was to chase/track animals over long distances, known as, persistence hunting
Its a shame the car culture has created such a sedentary lifestyle in the US, so most people are overweight and dont get ANY exercise whatsoever in their daily life. I lift weights occasionally but most of my exercise comes from commuting to work by bicycle, riding about 15 miles a day. In the morning after the ride I feel fucking great, my mind is sharp from the increased blood flow and im productive as fuck, and have lots of energy. I've also noticed an increase in my metabolism speed/digestion speed, and I take much more regular shits also. My mood is also enhanced, and I can fuck my girl harder/better/longer now too, which she loves.
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