delinquent noun [C]. âº a âperson, usually âyoung, who âbehaves in a way that is âillegal or not âacceptable to most âpeople: âjuvenile delinquents.
Sahelanthropus may have walked on two legs. The oldest evidence for walking on two legs comes from one of the earliest humans known, Sahelanthropus. Walking upright may have helped this species survive in the diverse habitats near where it livedâincluding forests and grasslands.
Rather than creating large, bulky muscles like those heavy strength training can build, walking will keep muscles relatively small. For a muscle to become bulky, it must be continuously overloaded with very heavy resistance and even then bulk is not a guarantee. Obviously, walking does not meet this requirement. Instead your legs become stronger as your fitness improves. The primary impact walking has on your muscles, is improving muscular endurance, which is the ability of a muscle to repeatedly contract for an extended period of time.