Quote Originally Posted by Wahine View Post

The main reason for the clustering is to load the system and recover over a day or two, then load the system again and recover. Recovery is more effective that way over the long term than spreading things out too much. Then you end up with one challenging workout every day and never really get a full recovery day. It feels good in the short run but in the long run is more likely to lead to overtraining and burnout.

This works great for me for my interval training during the week. Hard run, hard bike, hard swim and lift all clustered in to two days, and then a recovery day. It makes it easier mentally too because I know that I just have those two tough days and I get a break.