Survival skills
A human being can survive an average of three to five days without the intake of water. The issues presented by the need for water dictate that unnecessary water loss by perspiration be avoided in survival situations. The need for water increases with exercise.
Blastaar
Blastaar has superhuman strength and endurance, and is incredibly durable and resistant to injury. Conventional weapons and even ballistic missiles could have no effect on him. His superhuman constitution can withstand extreme variations in temperature and pressure. He is virtually tireless. He can live without nourishment for several weeks and survive in the vacuum of space by inducing himself into a state of hibernation.