It would be VERY helpful if the watches can split the load values between low and high aerobic.
Currently, independently of the primary benefit, the load is either:
1- All low aerobic
2- All high aerobic
3- Anaerobic with some low aerobic
4- Anaerobic with some high aerobic
The most common problem that it causes is that if someone run 45mins in Zone 2 but, for the last 15mins, the HR slowly crawl into Zone 3, the entire 1hr workout will be counted as High aerobic, instead of 3/4 Low aerobic and 1/4 High aerobic. I'm sure there would be a way to split the time shared in each category, as it's already done between anaerobic and aerobic...