A fast-acting effervescent boost for brain and body, David Kirsch’s Energy Bubbles are brimming with energising vitamins and minerals – including yerba mate, taurine, ginseng, potassium and a cocktail of B vitamins – to aid mental agility, promote concentration and help conquer that afternoon energy slump. Free from sugars, artificial sweeteners and chemicals (and astonishingly low in calories), this natural invigorator promotes positivity, helps you focus and ‘get in the zone’, without any jittery side-effects – or fear of the subsequent ‘crash’ that accompanies caffeine. This potent potion also includes chromium – a unique ingredient renowned for its fat-burning and muscle-building properties – to notch metabolism up a gear so you feel physically – and mentally – motivated.