As a working personal trainer of almost 15 years, and an avid exerciser of 32 years, the single best exercise I know is uphill-walking. Don’t get me wrong, there are others but none that are more readily available, affordable, repeatable, offer more benefits and require less skill. Do understand that walking on flat ground is not the same. Nor are long walks with furry animal friends, if they require numerous pit-stops. My first taste of a humble hill came years ago when climbing my first mountain in Colorado with my close friend, Harley. A 14,ooo ft beast, as I recall. All i had to do was “walk” to the top. No problem. I was in prime health and it still kicked my ass. Sure, jogging may get your heart rate up just the same. Sprinting will certainly do this. But jogging tends to cause the most injuries of any exercise and “all-out sprinting” can only be tolerated by healthy individuals for infrequent short bouts. Not to mention, most people hate running of any kind. So I typically don’t recommend any unless someone truly loves it, or requires it, and a supreme attention to detail is observed. However, walking is arguably what our bodies were best built to do. So, find a hill. Try walking up and down it as many times as you can in 10-45 minutes (personally, I like 30 minutes as a sweet spot). No need to do more. Make it more challenging by walking faster or up a steeper grade, not longer. Repeat often. Walking is great for everything health & fitness. Don’t believe the haters. Write me if you’d like to join me sometime. Seriously. @blue_sky_strongbox #blueskystrongbox