There are lots of types of body odour (BO) that we all suffer from, particularly when we hit puberty. Check out why people get BO, the best ways to keep it at bay and what to do if your mate's a bit stinky...
Everyone has their own natural smell. Sometimes we can get a bit stinky - that's what people mean when they talk about BO.
BO is caused by normal skin bacteria reacting to our bodily secretions, sweat, urine, and blood. They are all fairly pong-free at first but leave any of them for long enough and they'll get whiffy as the bacteria breaks down. That goes double if it's warm: bacteria go ballistic in the heat.
When we hit puberty, we sweat more. And we sweat differently: hormones switch on new sweat production in our armpits and groins - this is where our sweat glands are most concentrated. Time to step up the personal hygiene. And the underarm roll-on.
Be tactful! We all smell sometimes, but if a friend's got a bad case of BO, you could be doing them a favour by pointing it out.
Most likely in private, gently, with bags of reassurance that no-one else has noticed. And you're not a walking sewer.