Sleeping for more or less than seven hours a night reduces men’s sperm quality, new research reveals.
Getting more than nine hours shut eye reduces the stability of sperm’s DNA by 40 per cent, a study found.
Yet nodding off for less than six-and-a-half hours a night lowers sperm stability by 30 per cent, new research reveals.
Previous research reveals seven to seven-and-a-half hours sleep is optimal for maximising semen volume and sperm count.
Past studies also suggest too little sleep hinders the release of testosterone, which is critical for reproduction. Excessive shut eye may worsen sleep quality, which could also reduce the hormone’s levels.
