.Contact: 01926 816166; www.polar-uk.comCardiosport GO £39.99 Back-to-basics model. Display simply shows HR. One button allows you to scroll through work-out time, minimum, maximum and average HR for one session.Contact: 0800-146 224; www.cardiosport.com

and races to your repertoire - making it an excellent plan for beginners.According to Dunbar, Ryan's running improved instantly because she was experiencing the most basic benefit of using an HRM - awareness. "Your body will let you train harder than

.According to Dunbar, Ryan's running improved instantly because she was experiencing the most basic benefit of using an HRM - awareness. "Your body will let you train harder than is physiologically beneficial," he explains. "This means that many people do most

to read, although the total time, rather than lap time, is most prominent, and the ‘Adidas’ button that starts and stops the chronograph is small and not at an ideal angle to hit. Recalling the data in the memory is simple, and there are three basic