Depending on the time of year, coaches of high level athletes and sport teams normally increase training volume by incorporating two-a-day training sessions as part of a loading and rapid conditioning phase. Think of any highly competitive athlete, such as Olympic lifters, swimmers, football players, or track and field athletes – they all train twice a day.
Read more here >>> https://www.t-nation.com/training/2-a-day-training-for-radical-gains
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