I’ve started doing sprints. I’m not a runner, but oddly I am finding it really fun. I run as fast as I possibly can for 15 seconds then stop and rest. I’m trying to put in 100% effort for those 15 seconds that I run and then rest until I feel ready to do another 15 seconds at 100% effort. I only do this about six or so times. It is supposed to be a ‘good’ kind of acute stress. It’s my 5000 BC exercise. Stress that goes away. Imagine! I am keen to learn about ways that I can shift my chronic everyday modern stresses, to be acute natural stresses. What humans evolved to deal with. Sprints seem like a good starting place for me.