New member. Starting tommorow. Very nervous.

Hi Everyone.
Can anyone tell me what i can expect from the first few days? Is there dizziness/headaches/strange dreams? Can you tell me what obstacles to expect and how u have overcome them so that i can aviod the common pitfalls.
I am really excited to start. The main reason i weant to do this is for the burst of energy. I am a single mom and look after my special needs child. My energy levels are near zero and I am desperate to jump start my body to a more energetic and revialtized state.
Thanks.
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