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.
Anaerobic means without oxygen, and respiration refers to the processes in a cell that convert biochemical energy, such as that found in glucose, into usable energy in the form of ATP. Waste products like carbon dioxide are also produced during this process.