FOODMARBLE AIRE

£149, foodmarble.com

Diet is a tough nut for self-monitoring tech to crack, but FoodMarble’s breathalyser gets more personal, spotting the foods that trigger digestive discomfort like bloating, constipation and diarrhoea. A quick and easy blow test reads the hydrogen levels in your breath, caused by fermentation (bacteria breaking down foods that haven’t been fully digested and absorbed in the small intestine). Your test results sync with an app to reveal if it really was that gluten-loaded pizza that did the damage.