Have you noticed a decline in mental energy or focus since not doing “cardio”? I have read several reports that indicate that aerobic exercise is best for mental performance. Any thoughts?
Thanks to reader Phillip for his question on the comment boards. I’ve talked a lot over the course of the last few months about chronic cardio and the very real disadvantages of this type of training (higher cortisol levels, oxidative damage, systemic inflammation, depressed immune system and decreased fat metabolism, etc.). However, just because I don’t do chronic cardio anymore doesn’t mean I don’t get huge cardio benefits from the high intensity sprints and other interval exercises I do. This high intensity part of my workout is short compared with the hours I used to used to spend training. I choose to consider efficiency as a factor in my training program, and (as I’ve said on a number of occasions) I’ve never felt better than I do now.