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Exercise does your body good, or most of the body, according to a new study containing a group of 70 participants. German dental researchers conducted the study and set out to explore the effects of strenuous endurance training on teeth. Half of the participants were half triathletes and the other half were non-athletes. The average age of the participants was 36. Prior to the start of the study the group was given an oral examination and they had their saliva tested. They also answered a number of questions about their diet. Fifteen of the participants had their saliva tested while running for 35 minutes. Those 15 were found to have a higher risk of dental erosion. Saliva helps protect teeth. The study found that when the participants were not exercising the volume and chemical make-up of their saliva was normal. However, during workouts saliva production began to drop causing which may encourage tartar plaque growth.