Effect of spaceflight on the human body of muscle fibre prominent in muscles also change. Slow twitch endurance fibres used to maintain posture are replaced by fast twitch rapidly contracting fibres that are insufficient for any heavy labour. Advances in research on exercise, hormone supplements and medication may help maintain muscle and body mass. Bone metabolism also changes. Normally, bone is laid down in the direction of mechanical stress. However, in a microgravity environment there is very little mechanical stress. This results in a loss of bone tissue approximately 1.5% per month especially from the lower vertebrae, hip and femur. Due to microgravity and the decreased load
What Time Is Love? on 20 August 1990. The main B-side accompaniment of "What Time Is Love? (Live at Trancentral)" was the "Techno Gate Mix" of the track, which retained the title track's rhythm and bass as a backdrop to extensive samples of Jimi Hendrix's "Voodoo Child (Slight Return)". Another UK 12" featured instead the "Wandaful Mix", which sampled from Wanda Dee's "To the Bone". Key "America: What Time Is Love?" was released in the US during October 1991, four months before its release in the UK and elsewhere (24 February 1992). The B-side "America No More", which featured anti-war sentiments directed at US