I've recently lost a fair bit of weight and have just started exercising at the gym. I am diet controlled with lchf diet (30g carbs) and am usually around the low 4's. I was 3.8 before exercise today and had a smoothie with 19g of carbs .. coconut water, coconut milk, frozen raspberries, 1/2 avocado, water. After 1hr workout was 2.9. I felt fine but that seems low to me. Last time I was that low was after a vodka incident (blush) and my nails went blue! Any advice on what to eat when gratefully received.