Final answer:
To minimize riding fatigue, it is best to take frequent breaks, which helps muscles recover and reduces heat buildup from energy output. During a ride, energy expenditure converts to heat, and going uphill increases potential energy but can exhaust kinetic energy reserves.
Step-by-step explanation:
To minimize fatigue while riding, the most effective strategy is a) Take frequent breaks. This allows your muscles to recover and prevents the build-up of lactic acid which can lead to fatigue.
When you go on a bicycle ride, all of your energy output eventually turns to heat due to biological inefficiencies and friction. For example, the energy from muscle contractions not only propels you forward but also generates heat as a byproduct. The friction between the bicycle's moving parts and the resistance of the air as you move through it also contribute to this heat production. To manage this waste heat and reduce fatigue, it's important to pace yourself and take breaks.
As for the statement regarding riding a bicycle up a hill, it's indeed fairly easy to increase your potential energy, but converting a significant amount of potential energy to kinetic energy in a short time frame would indeed make you feel exhausted, due to the intense effort required to accelerate while going uphill.