We have implemented one of the highest rated heart rate monitors on the market to our facility. It's unique system can be used via an APP that is downloaded on to your iphone or android. Iphone watch, Garmin and some polar watches are also compatible with this chest strap system. It's the ONLY monitor on the market with a Memory chip that records up to 16 hours of training. You'll receive emails after each workout with your stats and it's intuitive design will change your percentages based on your performance in training, over time.
We have these units available for sale and can be used in (on our TV) and out of the facility or for rent during classes. Heart rate training is a great tool but not all people find it valuable and so we don't make it our focus in classes or mandatory to have to participate.