Water In The Morning?
Hydration will be boosted, but what can make a real difference is to increase the muscle mass. Indeed a quicker metabolism is able to process energy or calories more efficiently. When you can process energy efficiently, less is stored in your body and more is used to fuel the body. Since muscle cells are more metabolically active than fat, your body will be burning more calories even at rest.
The best thing you can do to boost your metabolism is to exercise: adding more muscle can increase your resting metabolic rate - how many calories you burn each day outside of activity.