If you're just a beginner, I recommend alternating runningdays with complete rest days.
如果你是个初学者，那我建议你跑步日后要全休一天。
2
Cross training in between your runningdays is a way to increase your endurance and strength without running too much and risking injury.
跑步期间的交叉训练既能够在让你不过量跑步，以减少伤害的发生，又能提高你的忍耐力和力量。
3
With a thin 'power slice' as the solar powered battery, triple flip owners could carry around extra to keep their phone runningdays without recharging.