Myths and truth about human body

True, muscle consumes around three times as much energy
as fat, but the cells of our other organs are even hungrier.
Fat people have larger organs and more cells overall to keep
running, compared with their slim counterparts. This means
that their overall energy consumption – or their resting
metabolic rate – is larger. Source: Journal of Nutritional
Sciences
Are you an apple, who carries weight around their tummy, or
a pear, who loads it onto their bottoms, hips and thighs? In
the past, “apples” were generally considered at higher risk of
heart disease and diabetes, because their abdominal fat
secretes chemicals that boost inflammation, raise blood
pressure and cause insulin resistance. In contrast, the fat
that sits on your buttocks was thought to be relatively
benign, but recent research from the University of California
at Davis suggests that this so-called "gluteal" fat also
releases these harmful substances. In other words, whatever
your body shape, too much excess fat could be bad news.
Source: University of California, Davis
Although many women like to think of themselves as
“hourglass-shaped” (or a pear with a couple of apples on
top) 3D body-scanners tell a different story. When
Manchester-based researchers used these machines to scan
240 British women, they found that 63% of them had similar
bust, waist and shoulder measurements, and little waist to
speak of – making them “rectangle-shaped”. Only 13% were
an “hourglass”; the rest were “pears” (8%); “spoons” (a top-
heavy hourglass shape) (7%); “inverted triangles” (6%), and
“triangles” (3%). Women also become more rectangular as
they age: 80% of women over the age of 56 fell into this
category. Source: Manchester Metropolitan University
Though “man boobs” – aka gynaecomastia – often go hand
in hand with a beer belly and a double chin, they're not as
flabby as they look. In fact, in most cases they are caused
by the growth of breast tissue. Overweight men sometimes
develop them because fat cells produce the female hormone,
oestrogen, which stimulates breast growth. And while
testosterone would usually inhibit such growth, levels of
testosterone decline as men age. Source: UK National Health
Service
When Turkish researchers surveyed 200 men, they found that
those with a higher BMI and an obvious belly lasted an
average 7.3 minutes in bed; men in the slimmer group lasted
just 2 minutes, and were more likely to suffer from premature
ejaculation. The reason is probably reduced testosterone,
which often goes hand in hand with obesity. However, while
large men may last longer, they may struggle to get it up in
the first place: being overweight is also associated with
erectile dysfunction. Source: International Journal of
Impotence Research