fat burners and thermos do cardio while taking or no?

[peterknpp1]

I'm new to this and would like to know should I do cardio while taking fat burners or thermos a couple of my friends say it makes them sick is there anything bad happen he said it made him puke blood

[RangerDanger830]

My advice would be to find a lifelong diet that works for you that includes plenty of exercise...and absolutely no garbage fat burners. Even the ones that do work on bandaid the problem so as soon as you stop taking it you'll rebound.

But here's the answer you want to hear:

Take them ideally right after am cardio.