THE SPLITS LAB
Running science, applied
Trust the science.
Run like a machine.
What you eat, how you train, what you wear: every part of running can be measured and improved. We take the research, test it on one real amateur's data, and show every number.
Follow on InstagramHow we use evidenceFour things to optimise
Grams, not guesses
Carbohydrate, fluid and sodium, worked out from the guidelines and your own sweat data.
Structure that works
Volume, intensity and long runs, shown week by week from a real training block.
What the studies say
Shoes and gear judged on published evidence, including who paid for it.
The work between sessions
Taper, sleep and recovery, with the research behind each claim.
Current experiment
Latest
From the lab
The first posts land on 15 November. Follow on Instagram to see them first.
Free tool
The fuel and sweat planner
Carb loading, race-morning breakfast, gels by the kilometre, fluid and sodium: worked out in grams from your weight, your race and your own sweat test. It runs in your browser: no sign-up, and nothing you enter leaves the page.
Open the planner