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Caffeine can improve a skilled golfer’s game, according to a study published in Medicine & Science in Sports & Exercise. Among a group of 12 skilled golfers competing in a two-day tournament, performance was compared with a placebo and a supplement containing approximately 155 mg of caffeine, an amount similar to a cup of coffee. Golfers taking caffeine reported less fatigue and more energy, and demonstrated improved performance, including better total scores and drive
distance. The caffeine dosage was customized for each golfer: 1.9 mg per 1 kg of body weight. In an 18-hole game, supplements were taken before tee-off and before the ninth hole.