REGO combines a special mix of complex carbohydrates, fructose and protein, which has been shown to give a rapid improvement in recovery from hard exercise. . REGO is the ideal post exercise drink and is especially useful after hard training sessions. . REGO was inspired by Chris Boardman who had experimented mixing our carbohydrate energy drink (PSP22) with protein powder. . REGO has been used by him, and many other top athletes and sportsmen since its launch in 1995..