johnny tocco's gym has been here in las vegas for 70 years, and the most famous boxers in the world havee foreman, muhammad ali, mike tyson — and maybe alex will be among those names, one day. we've asked him to try out something that is on show at ces for the first time, something that helps to detect a massive problem in boxing and in sport generally. concussion. eye—sync uses a modified vr headset to track how accurately alex's eyes can follow moving points. same deal, follow the target positions. the system can then tell whether there might be an underlying brain injury to be concerned about. here, the results show that alex's left brain responds better than his right. nothing to worry about at the moment, but something which can be worked on. it's in use already by the golden state warriors basketball team here in the us, and eye—sync‘s creators say the system could also help look for early signs of dementia. meanwhile, nick has met a different alex, who has created something to prevent injuries in the first place. not in boxing, but in cycling. today we know the main areas that are