either pace or distance, there's an alarm to warn of fast or slow pace and an Autolap function. The RS200SD features five hear-rate zones, OwnIndex VO2 Max predictor and comfortable, soft Wearlink monitor strap. On the downside, it isn't as intuitive
-up to set a heart-rate target zone for that session and a fitness test which predicts your VO2 max. It also lets you record detailed heart-rate information for each rep you run, or every split in a race, providing you with your maximum and average heart rate
of useful features including a 200-lap memory, three target zones and detailed personal inputs such as VO2max and Body Mass Index (BMI). The chest strap chafes mildly but no more so than other HRMs. The regular functions such as the stop-watch and count
. This will teach your leg muscles to function at your goal pace even when theyre already tired, which is exactly what you will need them to do on marathon day.Rule 7: Build your aerobic capacityHaving a high aerobic capacity (VO2max) will increase the blood
that resting metabolic rate can stay elevated for hours after a bout of intense exercise. A 1991 Norwegian study, for instance, showed that significant fat-burning was occurring for a full 15 hours after a 70-minute bout of intense exercise (70 per cent of VO2
