By Tom Harle Team GB’s sleep guru wants Olympians to guard against the pitfalls of wearable tech. Sleeping has been identified by experts at Great Britain’s Olympic team as their next key battleground at the Paris Games, which open on July 26. Wearable tech – that produces a myriad of data cataloguing the quality and nature of our sleep – is all the rage but Dr Luke Gupta, sleep scientist for UK Institute of Sport and the Lionesses, is urging his athletes to exercise caution. “The ability to track is a good thing and it’s the first time that we’ve actually been able to visualise our sleep,” sa…