Tendon the Achilles tendon stretches as the ankle joint dorsiflexes. During the last portion of the stride, as the foot plantar-flexes (pointing the toes down), the stored elastic energy is released. Furthermore, because the tendon stretches, the muscle is able to function with less or even no change in length, allowing the muscle to generate greater force. The mechanical properties of the tendon are dependent on the collagen fiber diameter and orientation. The collagen fibrils are parallel to each other and closely packed, but show a wave-like appearance due to planar undulations, or crimps, on a scale of several micrometers. In
What Is Life the role of "entertainer" in his songwriting. In "I Me Mine", Harrison recalls that he changed his mind about offering "What Is Life" to Preston once he'd arrived at Olympic Studios and found the singer busy working on more typical material – or "playing his funky stuff" as Harrison puts it. Rather than attempt it with the Beatles during the band's concurrent "Abbey Road" sessions, he stockpiled the track with his many other unused songs from the period – "All Things Must Pass", "Let It Down", "I'd Have You Anytime" and "Run of the Mill" among them – and revisited