this only happens to me when im going hypo , happens maybe once a year, happened last week , I walked 1.5mi to gym with only oatmeal and some protein and fruit before, got to g ym immediately got a gatorade the only size they had (normal), workout was fine...... went to get groceries next door knowing I better get carbs in immediately (honey or gatorade normally for quick fix), and I started getting extremely hot, sweating sauna level sweat, all while in line at grocery store. decided to say screw it and chugged half gatorade and was fine. normally I always have quick carbs with me , the long acting insulin is trickier.