The Iranian threat, of course, is real, but its immediacy gets turned on and off by the Prime Minister like a faucet. In this tube the coals were placed, and when the water in the urn was hot, it could be drawn off by means of a faucet at the side. The drip-drip of water from the faucet sounded loud in the quiet.
After multiple dives per day or multiple days of diving, a minimum surface interval of 18 hours is recommended. If you had to do a decompression stop during a dive, the recommended time to wait before flying is a bit more of a gray area.
However, this process takes weeksâeven monthsâof living and training at high altitude, not 40 minutes of rowing with a gas mask on your face at your local gym! Moreover, until you're adapted to altitude, performance decreases. If you train at altitude long enough, you become adapted to the lower partial pressure.