Dear Coaches,
Here’s what’s coming up today:
Expert Opinion
Breaking GPS Data Silos in Sports
Your team rolls out cutting-edge GPS units.
Then hands every athlete the same recovery meal.
This is the quiet contradiction at the heart of elite sport.
Every sprint, deceleration, and heart-rate spike is captured. The external-load dashboard tells you exactly what happened: metres covered, high-speed efforts, total intensity.
And yet recovery and fuelling protocols are still delivered in one-size-fits-all templates.
The gap between what we can measure and how we act on it is widening.
UEFA’s own Expert Group recommends 4–8g/kg of carbohydrates for training loads lasting 60–180 minutes, covering 3–12km with >400m of high-speed running. For a 75kg midfielder, that’s anywhere from 300g to 600g of carbs—a 100% swing for sessions that could represent very different physiological demands.
Without real-time context, that’s educated guessing, not true personalisation.
GPS already knows the truth. It has logged the 8.2km covered, the 650m of high-speed running. The information is there, waiting to be used.
When nutrition is calibrated to actual load, the benefits compound: sharper training quality, faster recovery, improved composition, reduced injury risk. Over a season, those small, session-by-session adjustments build into significant performance advantages.
Takeaway: stop letting external-load data gather digital dust while athletes receive generic nutrition advice.
The teams that integrate GPS with fuelling strategy will define the next era of competitive advantage.
👉 Hexis are running a free webinar on how to integrate GPS and wearable data into personalised nutrition.
Resource Roundup
News & Resources
In Case You Missed It
Three presentation slide decks, three research proposals, one time-saving guide.
Performance Tech
Flow-Bio Sweat Testing Protocol
In a recent YouTube video, FlowBio put Ollie Marchon through their comprehensive sweat testing system.
FlowBio's protocol measures individual sweat composition and rate across multiple training scenarios.
Non-invasive sensor clips onto chest or arm heart rate straps. The device physically captures sweat from skin surface and analyses sodium content in real-time.
Initial session involves 45-60 minutes of controlled exercise while the sensor tracks sweat rate and sodium concentration.
Ollie Marchon's test session demonstrates the process: 17 minutes into stationary bike work at 130 BPM, sensors active, "dripping wet" with towels positioned around the equipment. The app interface shows data captured.
FlowBio requires 3-4 additional sessions across the following week, varying intensity, duration, and environmental conditions.
Ollie's 60-minute bike session at 135 BPM average showed 1.4 litres of fluid loss—data captured and logged immediately.
After completing multiple sessions, FlowBio provides specific hydration recommendations: exact quantities of fluid and sodium needed before, during, and after training based on session type, duration, and ambient temperature.
As FlowBio's CEO explained during Ollie's session: "We are physically capturing the sweat off the skin surface and analysing the sodium content. So, how salty the sweat is and then the sweat rates, the amount of water that's being lost per hour."
