Take a Hike!
We like to hike to the point of exhaustion. We drink a bunch of water beforehand, don't bring anything with us, and set out for several miles of tough terrain. It's the best! By the end we feel just starving and ready to eat an amazingly wonderful meal.
Basically, it's going back to our hunter-gatherer roots. Cavemen didn't have treadmills, or flat paved tracks to run on. They didn't bring Cliff bars with them to satisfy the sweet pangs of hunger. Our ancestors built muscle and got cardio workouts by setting out on tough hikes.
Totally different than a gym workout, it feels so good to be surrounded by beautiful untapped nature, and just brings a sense of peace. Throughout the hikes we will stop to jump up on some rocks or climb a tree here or there, to intensify the workout. It's way better than lifting hand weights at 24 hour fitness.
Mark's Daily Apple