All sport has to be practised with maximum guarantees, but even more so if we're dealing with a resistance sport such as cycling. To know your heart rate is essential for safe cycling, ensuring your efforts on the bicycle. To this end you need to control your heart rate and therefore a heart rate monitor for cycling is ideal for avoiding any possible risk situation for our heart beats.
One of the main uses of the heart rate monitor is for training. In this way we can train with complete safety knowing that we can still give that little bit more, or lower the rhythm if our heart rate is too high. Especially for mountain bike where the ramps and changes in rhythm are more frequent and unexpected. But its use can be adapted to any modality, because cycling is a resistance sport and therefore a bicycle heart rate monitor will always be useful when pedalling.
Finally, if your world is competition cycling then you should seriously consider one. In the race we give our all, down to our last breath that will give us that energy to cross the finishing line or to perform the best trick possible. But you must know your limits and learn to control them when you're giving 100% of your energy to the pedals .