What Saturation Divers Eat For 28 Days Sealed in a Steel Chamber

Saturation divers live for up to 28 days inside a pressurized steel chamber on a ship, breathing a helium mix that steals their body heat. They can burn more than 3,500 calories a day, every meal comes in through a small steel hatch, and many still lose muscle. This is what they eat, why helium makes them hungry, why hard shifts kill their appetite, why they drink twice as much, why they never see the sun, and what pressure does to the food itself. Sources: Deb et al. (2016), "Nutritional considerations during prolonged exposure to a confined, hyperbaric, hyperoxic environment: recommendations for saturation divers", Extreme Physiology & Medicine (energy needs 44-53 kcal/kg, US Navy 3,105 vs 3,534 kcal at 317 m, helium heat conduction, 2.65 kg / 1.98 kg muscle loss, protein 1.3 g/kg, diuresis 1,032 to 2,100 ml, dehydration in 128 divers, lockout up to 8 h, carbohydrate 16-60 g/h, vitamin D, oxidative stress, iron, taste changes) Avaunt Magazine, "Life Inside a Saturation Chamber" (medical lock, chamber size, teams, 28 days, 7-day decompression) Wikipedia, "Saturation diving system" German Aerospace Center (DLR), "Deep diving on dry land: the TITAN pressure chamber" (1990, 615 m, food under pressure, loss of taste)