User 6372
Guest
@Mark Kidd
Besides the issues addressed with mitochondria and ability to maintain high training frequency there is also the stress placed on the adrenal glands and "fight or flight" response that HIIT or other similar glocolytic protocols can induce.
If you're training more than 3 times per week, pushing hard into glycolitic work each time is not a great idea. It's a reliable pathway to burn-out and overtraining.
But isn't swing, rest, swing, rest....HIIT? I thought that was a good thing...