Hi All. I want to add in some Hiit in to my training, specifically I want to perform hill sprints. I did these a few summers back and loved how it made me feel and look. My performance was through the roof in all aspects. My main purpose for wanting to do hill sprints is to build a good gas tank and also for some fat loss. Now I am in my 40s I want to focus on progressing my log book doing some crazy high rep leg stuff squats, deadlifts and leg press etc. My question is regarding where to perform my hill sprints in my split to still allow recovery from my resistance training and what format is best I.e a 40 yard all out effort followed by a rest period that allows my breathing to return to normal ready for another too effort or sprints where the only rest is the walk down the hill. I currently follow push,pull, rest, legs, rest repeat. Thanks