Captain America has no superhuman powers, but through the Super-Soldier Serum and "Vita-Ray" treatment, he is transformed and his strength, endurance, agility, speed, reflexes, durability, and healing are at the zenith of natural human potential. Rogers' body regularly replenishes the super-soldier serum; it does not wear off. The formula enhances all of his metabolic functions and prevents the build-up of fatigue poisons in his muscles, giving him endurance far in excess of an ordinary human being. This accounts for many of his extraordinary feats, including bench pressing 1200 pounds (545 kg) and running a mile (1.6 km) in 73 seconds (49 mph/78 kph). Furthermore, his enhancements are the reason why he was able to survive being frozen in suspended animation for decades. He is highly resistant to hypnosis or gases that could limit his focus. Rogers' battle experience and training make him an expert tactician and an excellent field commander, with his teammates frequently deferring to his orders in battle. Thor has stated that Rogers is one of the very few humans he will take orders from and follow "through the gates of Hades". Rogers' reflexes and senses are extraordinarily keen. He has blended judo, western boxing,kickboxing, and gymnastics into his own unique fighting style and is a master of multiple martial arts.