Why do I wake up sweating?

There a lot of reasons for night sweats, most of them medically-related. Rather than Google "night sweats" and be terrified by the sheer volume of things that it could be, mention it to your physician and see if he / she would like you to come in for blood tests and such. It may be as simple as just keeping your room thermostat a bit cooler, or you may be prone to intense dreams. Either way, a physician is a good place to start!

This happens to most people. It may be because of bad dreams causing you to fuss in your sleep or wearing too many layers

It may be because of heat. It also can be because of stress, a bad dream, or something along those lines

whenever u have a nightmare of something horror experience or something bad then u vl get sweat. other reason could b warmth of surroundings.

Sometimes things from the past (bad memories ect.) have a way of making it into your dreams and torturing you. Find some way to work around this, like talking to a friend or a therapist.

higher humidity or most probably due to stress full nights. it has happened when your significant other is not satisfying your needs.

Could be lucid dreaming. Your house could be too warm. It could be the type of food you ate before bed. There are many reasons to wake up sweaty from sleeping, but we usually sweat to regulate our body temperature, so it could be environmental reasons.

Sweat is a natural reaction to many things, we sweat when we excersise, when we're too warm, when we're afraid or angry. Your sweating may just be a normal physical reaction your body is giving you, it may simply be too warm, or you could've had a frightful dream, waking up sweating because of that.

Your body is fighting to maintain a constant temperature even while a rep, sweating helps with that

I wake up sweating always that i have the same old dream that made me feel insecure, i´m always in the dark and running as fast as i can but it is never fast enought.