Fitorex«You have to eat every 2–3 hours to 'speed up your metabolism'»
False
What the evidence says
The number of meals does not meaningfully speed up your metabolism: the thermic effect depends on the total you eat, not on how many sittings you split it into. Eat as often as is sustainable for you (2 to 6); the daily total and your protein are what matter.
How settled this is
Meal frequency does not meaningfully change energy expenditure.