The new study, which only focused on the hours between 8am and 5pm, suggests that lung function may be controlled by the same pattern.

BBC: NEWS | Health | Lungs 'best in late afternoon'

This latest research at Swansea University's College of Engineering follows an initial study into the effects that a normal pregnancy has on women's cardiovascular function.

BBC: Pregnant women

This is only an early result from a very small study, but coming on the heels of reports just a few months ago, in which adult stem cells restored heart function to patients with advanced heart failure, the promise of stem cells again got just a bit brighter.

FORBES: Embryonic stem cells: can we make the blind see?