Why do I wake up sweating?

Try to check proper ventilation ; the sheets you are using ;and the routine you had been doing everyday; otherwise consult doctor

I might just had a bad dream, and got pretty anxious about what happened inside the dream, like running away from someone or etc.

Waking up sweating can be a sign that you have had a nightmare, been anxious or panicky in your sleep or you overheated whilst sleeping, although if it is a recurring incident then consult your doctor as it could be a medical issue but a one off or once a week sort of thing is probably nothing to worry about

I wake up sweating when I have a bad dream, I suffer from extremely realistic and vivid nightmares on a daily bases. Whenever this happens I wake up in a terrible sweat.

There could be several reasons... Might be it was such a hot day or ur air con was not on or you could be worrying about something and anxiety makes you nervous and sweat.. so you probably might not be sleeping well..

Excessive sweating is called Hyperhidrosis. Night sweats can be from different number of things. Night terrors, sleep disorders, medications, or medical conditions. See your doctor if it's a bother to you.

this can be due to a number of reasons, if this is due to a panic attack and occuring on a regular basis then medical assistance should be given.

This can be for many reasons. Do you have bad dreams? Do you struggle to go to sleep? Is this a recent event in your life? Has something else happened in your life that coincided with this? These can be some routes to an answer.

Firstly, look at your physical environment. Is your bedroom too hot, or do you have thick pyjamas or a thick duvet on your bed? Sometimes people do wake up sweaty, and it's just a normal thing to do! If your sweating is excessive, and your environment doesn't offer any clues, maybe check in with your doctor? Another explanation could be that you have had a nightmare or unpleasant dream that you don't remember, and the sweating is simply your body's response to a perceived threat.

I can only answer for myself, but I used to think that was normal. I thought everyone woke up in a hot flash. It turned out that it was because I had sleep apnea. I didn't get tested for it because of the sweating, but I did notice that they stopped after I was able to use my bi-PAP, and I notice that I wake up hot if I forget to put it on. There may be different reasons for you, but that was mine.