Rich Clarke, a highly qualified S&C coach, university lecturer and evidence-based trainer, talks us through how we can make simple changes to improve our agility training. He explains how we can use constraints, ensure a specific stimulus and where we might start with less athletic players.Here are some of the highlights:Agility needs a specific perceptual stimulusWhere to start with less athletic playersHow to coach basic techniques with simple constraintsHaving a clear rationale in session designLadders, Box jumps and Hill running: Yes or No?For more from Rich, go to:richperformance.co.uk