Is Running an Acceptable Substitute for Weighter Rucks?

Running can be an acceptable substitute for weighter rucks so long as the emphasis continues to be on keeping the heart rate at its recommended one, 80 minus age. For some people, running leads right in the lower back issues. If you have a soft surface, you glide across it. There's no magic huntreda hundred killes. So go to one 20, to a hundred.