SiS Rest+

Sleep is essential when it comes to overall wellbeing and athletic performance. Well rested athletes run faster, react quicker and perform better. That’s why our Performance Solutions team ran a research study in association with Liverpool John Moores University, to test the hypothesis that Rest+ could improve sleep latency (time to fall asleep) and total sleep time.

Participants didn’t know the purpose of the study to ensure no bias, their diet, exercise and light exposure were controlled and monitored to ensure fairness.

The results are game changing.

SiS Rest+ juiceSiS Rest+ juice
Rest+ Cherry & Vanilla

Rest+ juice promotes sleep and recovery. Scientifically proven to increase total sleep time by up to 22 minutes.

Rest+ berry JuiceRest+ berry Juice
Rest+ Berry

Rest+ is a tasty juice sachet that can be mixed in warm or cold water or added to your favourite meals.


Pushing yourself hard in training is vital to improve your performance but if you don’t sleep enough then you won’t recover properly and reap the benefits of all your hard work.

It’s during deep sleep that growth hormone is secreted, which is vital for repairing muscles after a hard session, but without it you may feel sore in the morning and recover more slowly.


  • Tart Cherries - Naturally rich in melatonin, the hormone responsible for sleepiness
  • 5-HTP & Tryptophan – Linked to the production of serotonin, the chemical produced by nerve cells to help naturally regulate your mood
  • Magnesium - helps activate neurotransmitters that are responsible for calming the body and the mind
  • Glycine – Helps lower core body temperature
biker with energy gelbiker with energy gel