Stop any exercise if you experience shortness of breath, dizziness, leg cramping, unusual fatigue, and/or chest pain (angina). Notify your doctor if these symptoms persist.

• 如果感觉呼吸急促、头昏、腿抽筋，异常疲劳、及胸痛应立即停止一切活动。如果症状持续，应联系医生。