Built-in exercise monitor predicts fitness We all contain the key to obtaining fit, according to researchers from the University of Exeter. The research team has shown that people each have a built-in ability to judge how hard our bodies are working, often with remarkable precision http://kamagra.mobi/reviews.html . A number of studies during the last 2 yrs, culminating in three educational papers during the past two months, shows a consistently close correlation between actual and perceived exertion in folks of all degrees of fitness.