I've come across a wonderful product. It calculates lab accurate information of body functions while doing aerobic training: EPOC, VO2 max, respiration, energy expenditure...
More at
www.suuntot6.com
Or actually you get them after workout when you run the data through the Training Manager.
I strongly recommend it to anyone who wants to improve his training effect but is not sure how.
Does anyone else have similar or opposite experiences of the product?