Cardiovascular exercise on a stationary bike induced levels of a master hormonal regulator of metabolism 3x more than strength training.

Cardiovascular exercise on a stationary bike induced levels of a master hormonal regulator of glucose, lipids, ketogenesis, and overall energy metabolism (called FGF21) 3-times higher than strength training exercises in a randomized crossover study.

Just more evidence of why it is important to engage in both aerobic exercise and strength training exercise.