Related topics: testosterone

Free weights or machines?

(HealthDay)—Resistance or strength training isn't just for bodybuilders—it's for everyone, and it's essential to combat the natural tendency to lose muscle mass with age.

Cranky crabs in broken shells often have the upper claw in fights

Sheer aggression rather than pure muscle strength often gives hermit crabs living in broken shells the edge during a fight. Broken shells constrain crabs' activities because they are heavy and a large portion of them unusable. ...

Tiger genome to help big-cat conservation

South Korean scientists said on Tuesday they had carried out the first DNA analysis of the tiger and four other great felines in a project to help critically-endangered cats to survive.

Sleeping for science: What can we learn?

(Phys.org)—Why are 12 volunteers about to spend 21 days in bed, lying with their heads tilted below the horizontal? Their experience will help to understand and address changes in astronauts' bodies in space as well as ...

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