Warm water wKes up your organs and hydrating the body as first thing in the morning improves metabolism.
You need to eat negative calorie foods(foods that need more calories to be digested in body, raw salads and fruits and whole grains and nuts) and exercise for sure to burn calories.
Next Steps
You are to young, hence its right time to start day with galss of warm plain water, not having tea coffee before breakfast. Avoid all junk you eat. Try keeping food simple and homemade
Health Tips
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Cheers take care