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FUEL EVERY STEP

Rugby player using a SiS GO Isotonic Gel with Energy written underneathRugby player using a SiS GO Isotonic Gel with Energy written underneath
Tottenham Hotspur Women drinking from SiS Yellow Bottles, with Hydration written underneathTottenham Hotspur Women drinking from SiS Yellow Bottles, with Hydration written underneath
Eilish Mccolgan drinking a REGO Recovery drink from a SiS BottleEilish Mccolgan drinking a REGO Recovery drink from a SiS Bottle
Professional cyclist, Josh Price, using a SiS BETA Fuel during a raceProfessional cyclist, Josh Price, using a SiS BETA Fuel during a race
A bottle of SiS Super Strength OMEGA-3 TabletsA bottle of SiS Super Strength OMEGA-3 Tablets

WINTER MARATHON TRAINING

BY JONAH ROSNER

HOW TO TRAIN & FUEL SMARTER

If winter running feels harder, it’s probably not your fitness.

Cold quietly changes how your body moves, breathes, and uses fuel. The effort cost increases before the pace does.

Find out what the cold is actually doing to your body, and how to train and fuel in a way that fits the conditions instead of fighting them.

MARATHON RACE PACKS

Aim to Perform, Not Just Finish

LEADERS IN PERFORMANCE

PROVEN BY PERFORMANCE

A pioneer in endurance fuelling. Proven to provide ultra-high levels of available carbohydrate to multi-hour endurance athletes.

  • 1:0.8 maltodextrin to fructose ratio
  • 17% increase in energy efficiency
  • Enhanced power output during max efforts

THE ELITE MALE MARATHON STUDY

Improve your running economy by 3%

FUEL LIKE A PRO CYCLIST

Enhance your own recovery process

SiS ATHLETES

TRUSTED BY ATHLETES

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All products are Informed-Sport tested, so for me as a professional athlete that is a really key part, knowing that the products are of high quality and exactly what’s in them is exactly what it says on the packaging.
EILISH McCOLGAN

ELITE RUNNER

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I would probably say my favourite is the HYDRO electrolyte tablets because I use them every day but also the REGO Collagen Shots as I used that when I got injured and during my recovery.
Olga Ahtinen

TOTTENHAM HOTSPUR PLAYER

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Training is one thing but focusing on recovery is just as important, especially when training for Triathlon. If you have a busy life getting the right food in on the go is hard, from REGO Rapid Recovery to the GO Energy Bakes.
TIM DON

TRIATHLETE

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Before a match, I take a GO Caffeine Shot to sharpen my focus.
Ivan Van Zyl

SARACENS RUGBY PLAYER