so you can keep your head up and breathe. The kick starts at the hip flexors, the muscles at the top of the thigh. Keep your legs straight so you are not tempted to use your quadriceps (the big muscles at the front of your thigh); slightly turn
muscles that are in the backs of your legs, such as the hamstrings, after you've used the quadriceps and shin muscles on the bike previously.Research has shown that athletes in transition often have heart rates close to their maximum. It takes specific
