Experience: I lived underwater for 100 days

"The habitat, secured to the bed of a 30ft-deep lagoon in Key Largo, Florida, wasn't the most comfortable hotel I've spent time in, but then I wasn't there for a holiday. I'm a biomedical researcher and I was there as part of a scientific mission called Project Neptune 100. The main aim was to research the mental and physical impact on the human body of living in increased atmospheric pressure"

"Each day I rose at 5am, did push-ups and a workout using resistance bands, had coffee and breakfast, then carried out a range of biomedical engineering experiments on myself throughout the day, such as checking my heart and brain, blood, urine and saliva. At 9pm I'd meditate, then have eight hours of sleep filled with vivid dreams. There was room to stand in the lodge, but I cracked my head repeatedly on a screw sticking down from the ceiling."

A biomedical researcher lived in Jules' Undersea Lodge in March 2023 as part of Project Neptune 100. The lodge sat on the bed of a 30ft-deep lagoon in Key Largo, Florida and was accessed through a moon pool by scuba diving. The mission examined living at 70% higher atmospheric pressure and the mental and physical effects of 100 days of confinement, with applications for future Mars missions. Daily routine included 5am workouts, biomedical self-testing of heart, brain, blood, urine and saliva, evening meditation, and eight hours of vivid dreams. Living conditions included a wet room, sleeping tubes, food delivered by a diver, a cracked tooth on day 12, and a three-quarter-inch loss of height.

Read at www.theguardian.com