Hello nadja sorry to here about your lack of vitality.Some people have difficulty thriving on an vegan diet.There is a transition period for the body to adabt to the new foodsources.Not to mention the cleaning of ones temple,possibly detox issues intervening with your energy conversion as well.For me personaly I have the opposite issue,so much energy to the point of WOW!How many calories are you consuming,are you consuming any superfoods?How many meals are you eating a day?What is your caloric demand fo your very active lifestyle?Chooseing nutrient dense superfoods can boost ones vitality dramaticaly!I personaly do a lot of supersmoothies to maximize nutrient uptake.Using high quality foodstuffs and blending for maximum bioavailability will raise your vitality=energy out the wazoo!!!You should visit the website rawfoodadvantage.com a very informative site.They have raw food coaches who can help you with your questions on the rawfood lifestyle.May vitality along with an abundance of energy return to your life!