My first few "hypos" were me dipping below 5.0 for the first time in weeks. It was almost a relief to get to 3.9 for the first time and have a genuine hypo after my body had cried wolf for days!
I sometimes feel hypo now when I'm not; I think if my bloods come down rapidly it causes the feeling so I try and balance most of my meals with some low GI foods so there are some "carbs" being released for a longer period of time - overnight oats for breakfast, bananas for lunch, etc. I also take some carbs when I'm doing strenuous exercise - like climbing a stonking big hill in Wales - to counteract the activity.
I was shaking yesterday and sweating and was over 5.0. By the time I was ready to drive home I was 3.8 and felt fine, and had to stay at work for another 45 minutes until my bloods returned to normality.