LX-140 WITH 14,000 BTU AC AND 14,200 BTU HEATER. Yes I know its pricey at $419.89 but when you think what even a portable air-con is going to cost you, this all in one heater / air conditioner / fan and dehumidifier will cover all year round climate control for your grow room. One thing that really makes it stand out is its big capacity dehumidifier (60 pints).
The person should pass out in 6 - 20 seconds. Depending on the person, irreversable brain damage will begin somewhere around 4 to 6 minutes. At 7 minutes, the brain will be dead but the drowning person missed it all as they passed out at 6 - 20 seconds.
On an average, a person can hold his or her breath underwater for a very short period of time that is approximately between 45 seconds and 75 seconds (or one minute and fifteen seconds).est Answer: People tend to hold their breath for a longer period of time when they are underwater then they do when they are on land. The current world record for breathing underwater stands at a mere two seconds short of nine minutes, that is at eight minutes and 58 seconds.