According to a study by the National Institute of Child Health and Development and Stanford University, men who wear boxers during the day but go nude at bedtime have 25 per cent less DNA fragmentation than men who wear tight boxers day and night. Men who are hoping to be able to reproduce are advised to sleep naked, but during the day a loose pair of boxers is considered the best underwear choice for improving fertility. One third of people in the UK sleep naked according to an international survey conducted by the National Sleep Foundation. Sleeping naked not only benefits men, but women who sleep naked are less likely to suffer from yeast infections. It can also help people sleep better. Join thought-provoking conversations, follow other Independent readers and see their replies. Want to bookmark your favourite articles and stories to read or reference later? Start your Independent Premium subscription today.

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Half a Teaspoon
Jump to navigation. Gynecomastia is a condition that affects men, causing them to develop abnormally large breasts. Gynecomastia occurs commonly in adolescent boys who usually lose the excess breast tissue within a matter of months. However, an unfortunate few are stuck with large breasts permanently. True gynecomastia is not simply excess fat in the chest area, but firm breast tissue, usually growing under the nipple. The condition often causes breast soreness. The general cause of gynecomastia is an increase in the ratio of estrogen female hormone to androgen male hormone. Factors that can cause such an abnormal ratio of hormones include steroids, marijuana, tumors, genetic disorders, chronic liver disease, side effects of certain medications, and aging. If you suffer from gynecomastia, you should avoid any drugs that might be causing the problem. For overweight men, the first treatment your doctor is likely to suggest is losing weight and exercising.
Background
Sleeping naked might not be the first thing you think about when it comes to improving your health, but there are some benefits that might be too good to ignore. Since sleeping naked is pretty easy to try yourself, it might be time to strip down and get your snooze on. For your health, that is. As it turns out, there are many benefits of sleeping naked.
The development of an easy to use, one-pot, environmentally friendly, non-invasive and label-free colorimetric probe for the determination of semen protamines, the biochemical marker of male fertility, using heparin gold nanoparticles HAuNPs is presented. The affinity of HAuNPs for protamines was due to the electrostatic interactions between polycationic protamine and polyanionic heparin. The binding of HAuNPs to protamine was characterized by variation in the plasmon absorption spectra followed by a visibly observable colour change of the solution from red to blue. The colour change and the variation in the absorbance of HAuNPs were highly specific for protamines in the presence of different interfering compounds and the method was successfully applied for determining protamine in real samples of semen and serum. Rather than a quantitative estimation, it seems that the method provides a quick screening between a large array of positive and negative samples and, moreover, it maintains the privacy of the user. The method appears to be simple and would be very useful in third-world countries where high-tech diagnostic aids are inaccessible to the majority of the population. Graphical Abstract Heparin gold nanoparticles aided visual detection of infertility. Abstract The development of an easy to use, one-pot, environmentally friendly, non-invasive and label-free colorimetric probe for the determination of semen protamines, the biochemical marker of male fertility, using heparin gold nanoparticles HAuNPs is presented.