The world’s number one performance nutrition brand. Trusted by over 330 elite teams and athletes globally. Informed-Sport Credited. #FuelledByScience

Joined May 2009
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For the latest product information, our online store, and our SiS rewards scheme, please visit: scienceinsport.com You can also stay connected with us on Instagram, Facebook & TikTok, to stay up to date with our latest news, fuelling guides and other content from SiS.

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We’re delighted to announce SiS as the Official Energy Gel Partner of all @RunThroughUK races in 2025 🎉 🔋 Our aim is to close the knowledge gap for runners of all abilities who want to fuel effectively for their training and races 🥇 #RunThroughUK #FuelledByScience
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Scroll to discover the optimal science-backed nutrition timeline for your morning bike session this weekend🚲☀️ #fuelledbyscience
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Win the greatest prize in sport🚨   Science in Sport have partnered with some of the greatest sports teams, athletes and events in the world to give 7 lucky winners the chance to experience what it’s like to mix it up with the very best.   Enter now at scienceinsport.com/youvsport
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REGO, refreshed. A recovery solution for every athlete. Available now, exclusively on scienceinsport.com. #fuelledbyscience
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1 day to go. #fuelledbyscience
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Science in Sport retweeted
Anticipation is building... Warming up and fuelling up! 💪The boys are ready for the TTT at #ParisNice. We head down the ramp at 14:32 GMT. Over at #TirrenoAdriatico the pace is picking up as we head towards the final 20km and a bunch sprint.
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Science in Sport retweeted
Magnus 🤝 2⃣0⃣2⃣6⃣ The future is bright! We're excited to announce a new contract extension for @MagnusSheffield 🖋️
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From Tigray to the top of the world. We uncover the meteoric rise behind Gotytom Gebreslase and the unimaginable challenges she has faced to achieve marathon success. Chasing the Horizon with Gotytom Gebreslase. Part 1, Sunday 4th February. #fuelledbyscience
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Science in Sport retweeted
Over on Instagram, @ScienceinSport are running an amazing giveaway in collaboration with @ASICSeurope! For your chance to win a nutrition bundle, a signed vest, and ASICS Nimbus trainers - check our their Instagram post on the link below: instagram.com/p/C2U3uKmoa2N/…
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RT @INEOSGrenadiers: INEOS Grenadiers 🤝 Tobias Foss
 We’re excited to reveal Tobias will be joining the team on a three-year deal 🙌👊 Plea…
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Science in Sport retweeted
Now playing ▶️ @ScienceinSport: Fuelling Performance Go behind the scenes with SIS to see how they support the Grenadiers on and off the road with Performance Solutions 🙌🤝 Watch the full episode now: brnw.ch/21wEiO4
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After months of training for one of the World Marathon Majors, you want your race to go as smoothly as possible to maximise your performance.
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When you are running for two hours or longer, your body uses a large number of carbohydrates for energy. If you do not have enough, you risk hitting the wall around mile 20. Your body needs glucose, in the easily digestible form of carbohydrates, to quickly release energy.
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As the clocks turn back and winter approaches, your cycling sessions must adapt to meet the changing conditions. See our top 4 nutrition tips to kick-start your indoor training this winter: bit.ly/46JYtEl #fuelledbyscience #indoorcycling #turbotraining
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Science in Sport retweeted
2⃣0⃣2⃣4⃣ 2⃣0⃣2⃣5⃣ 2⃣0⃣2⃣6⃣ 2⃣0⃣2⃣7⃣ Carlos Rodríguez ✒️ INEOS Grenadiers A brand new long-term deal for @_rccarlos
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Amazing result for @SelemonBarega in his first Half Marathon race. Selemon lead at WR pace for a period of time in Valencia, finishing in 4th with an impressive 57:50.
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There was also a 66:12 4th place finish for Gotytom Geberselase on a challenging morning. Finally, with a PB of 67:10, @Samantharrison9 becomes the third fastest British female athlete in history. Incredible performance. #fuelledbyscience
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