for if you want to train for if you want to train uh your heart a good way of doing that is steady state work if you decide to do some sort of intermittent intermittent work there are several different ways one is um intermittent exercise that's more of a repeat in nature not interval which is very bizarre to people let's say that you go moderately hard hard for 10 seconds you go easy for 10 seconds and you do this for 30 to 60 Minutes imagine doing that that's good work it is good work but you know what to be shocking to you that you're not going to produce that much as or you're not red line your Redline your heart rate better would be like like 10 seconds of work 20 seconds of rest that that would be a fascinating research that sweds did back in the 50s and 60s on that it's amazing if you keep the work periods short uh you're able to not produce a lot of acid but just go very very hard and you're going to be able to uh train your heart and your lungs in this manner too you can also do and you also have peripheral adaptations in the muscles mitochondri and so on vascular some capillarization happening too