Mountain biking can help you with all of these problems Bicycle Amazing anatomy mountain bike fire red Shirt. Regular training sessions can improve your heart rate, plus it will make the transition from cycling to running easier. When practicing with a mountain bike, you will feel the pedaling force is heavier and you have to use more force to advance to the road ahead. It's the perfect strength to train for a triathlon. Another advantage of mountain bike training is that it's a lot easier to control. Studies have shown that mountain bikers can keep their heart rate and oxygen intake higher for longer. Once you've mastered climbing, you'll find it easier to ride your triathlon without much effort.