Two-a-day workouts can be a good idea, but only if you stick to a structured workout plan with enough time for rest. There are many benefits to working out twice a day. It reduces your sedentary time and overall performance. But twice-a-day workouts also carry a risk of overtraining and injury.
But beyond that, studies have shown that short bursts of high-intensity interval training can be more effective than 45 minutes of less strenuous exertion. … Studies have shown that short bursts of high-intensity interval training can be more effective than 45 minutes of less strenuous exertion
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