GCSE exams can be a stressful time for students, but there are things you can do to manage your stress and perform your best. Here are a few tips:

1. Start planning early. The earlier you start planning, the less stressed you'll feel. Create a revision schedule and stick to it. Make sure to schedule in breaks and time for relaxation.
2. Find a study buddy. Studying with a friend can help you stay motivated and on track. You can quiz each other, discuss the material, and help each other understand difficult concepts.
3. Take breaks. Don't try to cram for hours on end. Your brain needs time to rest and absorb new information. Take short breaks every 20-30 minutes to get up and move around, stretch, or get some fresh air.
4. Get enough sleep. Getting enough sleep is essential for good concentration and memory. Aim for 8-10 hours of sleep each night in the week leading up to your exams.
5. Eat healthy foods. Eating healthy foods will give you the energy you need to focus and study. Avoid sugary drinks and processed foods, and focus on eating plenty of fruits, vegetables, and whole grains.
6. Exercise regularly. Exercise is a great way to relieve stress and improve your mood. Aim for at least 30 minutes of moderate-intensity exercise most days of the week.
7. Talk to someone if you're feeling overwhelmed. If you're feeling overwhelmed by stress, talk to a trusted adult, such as a parent, teacher, or counselor. They can offer support and help you develop coping strategies.
8. Contact a Tutor. Children who have access to the right tutor early (from year 9) typically do far better not only academically but with overall confidence as a person. The right tutor can put a smile on a student's face where once there was fear. 

Remember, it's normal to feel some stress before exams. But if your stress is interfering with your ability to study or sleep, it's important to seek help. Talk to a trusted adult or mental health professional. With the right support, you can manage your stress and perform your best on your exams.

Here are some additional tips that may help you cope with exam stress:

• Visualize success. Take a few minutes each day to visualize yourself doing well on your exams. Imagine feeling confident and relaxed as you answer the questions. This can help you stay positive and focused.
• Practice relaxation techniques. There are many relaxation techniques that can help reduce stress, such as deep breathing, meditation, and yoga. Find a technique that works for you and practice it regularly.
• Avoid negative self-talk. It's easy to start thinking negative thoughts when you're feeling stressed, such as "I'm not going to do well" or "I'm going to fail." Try to catch yourself when you're having these thoughts and replace them with positive ones. For example, you could say to yourself, "I've worked hard and I know I can do this" or "I'm going to give it my best shot."
• Reward yourself. When you reach a goal, such as finishing a unit of study or completing a practice test, reward yourself with something you enjoy. This will help you stay motivated and on track.

It's important to remember that you're not alone. Many students experience exam stress. By following these tips, you can manage your stress and perform your best on your exams.