A lot more changes?
Yes, apart from the physical changes, there will be quiet a bit of emotional and psychological changes too. Many people experience mixed up feelings and mood swings. One minute you have lots of energy and the next you feel so absolutely tired that you just want to be left alone.
Your body is changing quickly, and this might feel very strange. Maybe you're self-conscious and worried if you're normal. You might feel extra-sensitive to criticism, or teasing, or just about everything. Little things might set you off. You might think that nobody understands you. Try and stay calm especially when you are with family or friends.
You may feel the extremes of everything. For example you may HATE things that you only disliked, or may feel distressed about things that you would normally cope very well with. In other words, your emotions have gotten more intense.
Your emotions are stronger, and they also switch back and forth more quickly than before. One moment you're joking happily, and the next you're crying your eyes out for no reason. You might be playing well with your sister, and then you're suddenly screaming at her. These are called mood swings for a reason: just like on a playground swing, one minute you're up, and the next minute you're down.
Puberty usually brings a whole new set of emotions you may have never felt before. For example, you may feel some sexual feelings that you never felt in the past.
As you are becoming an adult, you may feel like you need to be independent, to be in control of your decisions and action. Suddenly you seem to find everything wrong with your family's rules and beliefs, and want to be left out of it. You want to be YOU, and this can lead to conflict with your parents, friends, or just about anyone. Of course, eventually it also leads to you becoming a unique person: your grown-up self.
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