Sometimes I sleep in a hammock and it helps a lot. I have a Grand Trunk and an ENO, both doubles, that fit me and my girlfriend comfortably. I prefer the Grand Trunk, but I use the ENO mounting hardware with it.
Normal adult cells use a small energy plant located inside them to produce most of their energy needs from oxygen, this is an aerobic process. In contrast, cancer cells rely mainly on the first part of the energy production process dependant on glucose (sugar), this is an anaerobic process.
In yeast cells the waste product of anaerobic respiration is ethanol, but in animal cells it is lactic acid. Once the oxygen concentration in the cells goes up again, the lactic acid is broken down in aerobic respiration to produce carbon dioxide, water and more ATP.