The update says Brazil worked with the Gx Sweat Patch before the tournament. Roozbeh Ghaffari, co-founder of Epicore Biosystems, described it as an “adesivo inteligente” - a smart patch designed to measure sweat rate, fluid loss and sodium levels.
That information can help staff tailor hydration plans instead of giving every player the same instructions. In high-intensity football, where heat, travel and workload vary from athlete to athlete, that personalisation can be valuable.
England is reportedly among the teams using WHOOP devices, which track sleep, effort, stress and heart rate. The appeal is clear during a tournament: travel, disrupted routines and changing time zones can affect recovery before a player ever reaches the pitch.
The United States men’s team has also received Oura rings through a partnership with US Soccer. Use is optional, and players can monitor sleep, skin temperature, blood oxygenation, recovery and readiness.
The update cites medical opinion that wearables are best used to identify trends, then combined with clinical assessments and blood or urine tests. A poor sleep reading should not automatically mean a player is unavailable, just as a positive recovery score cannot erase pain or medical concern.
That balance will define the next stage of sports science. The next tournament storyline may not be which team owns the most advanced device, but which staff can turn its signals into smarter training, recovery and selection decisions.