Long-haul destinations offer great diving, but reaching them, for some divers, seriously messes with their body-clock. That can set them up for making simple mistakes, from forgetting to install a camera housing’s O-rings to potentially dangerous lapses of judgment under water. Jet Candy claims to use a carefully balanced homeopathic formula to help long-haul travellers avoid the pitfalls of jetlag. Ingredients are arnica, bellis perennis, cocculus, gelsenium and petroleum! Each £13 bottle contains 100 tablets, said to be enough to cover eight long-haul flights.