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Personal preference- does her recovery lag, if so PWO may be best; does she have trouble sleeping/unwinding, the evening may be best.
Even if science said that there was a 2% more optimal time I still think it would come down to individual variance and personal preference. I like my carbs at night always for example.
Results may vary | Results are based on individual circumstances | Timeframes for results are not guaranteed | Willpower is always required!