Did you ever wonder which muscles you use when you ride a bike?
As cyclists, triathletes we tend to think about the quads. Those dominant muscles are indeed of great importance the pedals, but it takes more to keep pushing those watts.
The primary muscles used in biking are the gluteal muscles, quadriceps, hamstrings and calf muscles. The quadriceps are the large muscles on the front of the thigh that are responsible for straightening the leg and pushing the pedal down towards the ground. The gluteus maximus and medius are located in your buttocks and are responsible for pushing the pedal forward at the top of the stroke. The hamstrings are located on the back of the thigh, and they work with the calf muscle to lift the pedal up from the bottom of the stroke. All of these muscles work together to give you power when pedaling and endurance when riding.
* Article taken from https://www.youtube.com/watch?v=MqLHuwxB5-c