"I'm fasting so I don't have energy"

I mean you can and it might even be true and sometimes you might just have to allow for that xD

_{but obviously better if you can mitigate it}

My coach has had to ask a couple of her gymnasts that as they are half dead by the time they get to her at the end of the day.

I don't think I've tried avocado in a smoothie and part of me wants to try but part of me feels like I wouldn't like that particular flavour as a drink XD