Answer
1. Running: Muscular endurance is essential for running as it allows the muscles to work for longer periods of time without fatigue, enabling the runner to maintain a steady pace and cover longer distances.
2. Swimming: Muscular endurance is essential for swimming as it allows the muscles to work for longer periods of time without fatigue, enabling the swimmer to maintain a steady stroke and cover longer distances.
3. Cycling: Muscular endurance is essential for cycling as it allows the muscles to work for longer periods of time without fatigue, enabling the cyclist to maintain a steady cadence and cover longer distances.