THE AFL Players' Association is unhappy with excessive training demands on players during their annual break, warning it could lead to "behavioural issues".
The Herald Sun can reveal a "substantial" increase in compulsory training programs and fitness reporting have landed some clubs in hot water and put players' mental welfare at risk.
The AFLPA has confirmed it has reported a small number of clubs to the league after complaints from players about off-season fitness requirements.
It is understood Fremantle, headed by demanding coach Ross Lyon, is treading a fine line with its demands.
But the year-round regimens are not an excuse for players to explore performance enhancing drugs, the association says.
Lyon warned his players they could not afford
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