Also on board is a new exercise machine, which is part of ongoing studies into the effects of long-term space flight on muscle and bone loss in astronauts.

VOA: standard.2010.04.05

But they do not breed more than once a year - so it is a long term exercise.

BBC: Banker backs alpaca flock

The statement said the Positively Plymouth website "was never designed as a long term exercise, or as a key external marketing tool for the city".

BBC: Positively Plymouth marketing brand ditched

Researchers believe that the increase in breathing rates caused by aerobic exercise help improve short term memory.

BBC: News | UK | 'Night of the short knives' disappoints press