Science in Sport is offering a boost to your fitness regime with a buy-one-get-one-free offer on all tubs as the Black Friday/Cyber Monday sales hit the SiS website on Friday 27 November and Monday 30 November.

The offer covers GO Electrolyte, Whey Protein and REGO Rapid Recovery as well as many others, all available in 1.6kg and 500g tubs. Science in Sport, Black Friday

The Science in Sport range has been researched and developed by sports scientists in conjunction with international athletes for fast hydration plus sustained energy for before & during exercise.

Since 1992, SiS has supplied endurance nutrition products to Olympic and world champions, including Sir Chris Hoy, heptathlete Katarina Johnson-Thompson and Tour de France winners, Team Sky.

Buy online only at