Use cross-training activities to supplement your running, improve your muscle balance, and keep you injury-free.

用交叉训练来补充你的跑步计划，提高你的肌肉平衡，使你减少受伤的机会。

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A strong and efficient core is necessary for maintaining proper muscle balance throughout the entire human movement system (kinetic chain).

在所有人体动作系统中(动力炼)，强壮而有效的核心对于维持肌肉的平衡是不可缺少的。

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But a tense muscle is a slow one. So the high levels of training in the martial arts teach and demand balance and relaxation as much as anything else.

但是紧绷的肌肉训练不是一蹴而就的，所以在高强度的教学训练中，需要掌握平衡和放松的技巧与其他的训练一样重要。

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But the wrong shoes, failing to warm up and not being aware of strength or muscle balance can also cause injuries.

CNN: Prevention better than cure

Older people tend to suffer falls as they lose muscle strength and balance.

CNN: Bring the Barbells, Granny

Multiple sclerosis is an illness that affects the nerves in the brain and spinal cord causing problems with muscle movement, balance and vision.

BBC: Simple eye scan can reveal extent of Multiple Sclerosis