(Reuters) - Tottenham Hotspur manager Nuno Espirito Santo said he does not follow the Premier League's guidance on heading restrictions in training even as soccer governing bodies look to reduce the risk of players developing neurodegenerative diseases. The League said it was "essential that club staff monitor each player's heading practice" but with no clear rules in place to enforce the recommendations, Nuno said he does not keep count. "Good question, that's why we have training sessions without nobody seeing us," Nuno told a news conference ahead of Sunday's North London derby against Arsenal. "I agree (with the limitations), I'm concerned with the situation of dementia and what heading the ball can cause. Maybe I'll get myself in trouble for this but football is jumping, heading -- it's part of the game."