Answer:
I think it's endurance, because sometimes it's hard to endure the pain and continue the exercises.
Explanation:
According to a research, endurance, strength, balance, and flexibility are very important. Each one has different benefits. Doing one kind also can improve your ability to do the others, and variety helps reduce boredom and risk of injury.
But I pick endurance, because it can help us keep healthy, improve our fitness, and help us perform the tasks you need to do every day.
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