Hill sprints are essential for developing power and strength, they are also a great way to boost the metabolism and require no kit and little time. pick a decent hill and try between 5 and 10 repeats of around 15 seconds of flat out with at least a minutes recovery between.
remember, don't overstride, use the arms to drive up the hill and push from the toes. Zig Zag down to save the knees!
just started these at my local park and there amazing
jinky1916 10 months ago