Jessica Ennis You are Jessica Ennis. You have a heptathlon event tomorrow. You are not performing the javelin technique well so need to train for a few more hours. Which drug could help you?

Stimulants Reduce feelings of tiredness so you can train for longer Stimulate the central nervous system to make you more alert Side effects: irritability, unable to sleep, high blood pressure, irregular heartbeat Eg- cocaine, caffeine, ephedrine

Andy Murray You are Andy Murray. You are in the Wimbledon final tomorrow. You have a slight sprain in your right ankle that hurts when you change direction suddenly. Which drug could help you?

Narcotic Analgesics Pain relief Allow athletes to return from injury sooner Side effects: loss of concentration, loss of balance and coordination, addictive, can make an injury worse Eg- heroin, methadone, morphine, codeine

Tyson Fury You are Tyson Fury. You are competing in the Olympics in 2 months time. Your coach has told you to build your aggression ahead of the games. Which drug could help you?

Anabolic Steroids Increase muscle mass and strength Develop bone growth Increase aggression Side effects: Mood swings, anxiety, high blood pressure, heart attacks, stroke, facial swelling, liver disease Women- deepened voice, facial hair, irregular periods, infertility Men- grow breasts, become impotent, kidney problems Eg- testosterone, nandrolone, boldenone

AP McCoy You are AP McCoy. You are racing in the grand national tomorrow. You currently weigh 10.4 stone but the weight allowance for the race is 10 stone. Which drug could help you?

Diuretics Speeds up kidneys to reduce fluid retention Rapid weight loss Can be used as a masking agent- to hide presence of other drugs Side effects: Dehydration, dizziness, muscle cramps, headaches, nausea, fatigue Eg- furosemide, triamterene, chloratalidone

Paula Radcliffe You are Paula Radcliffe. You are racing in the London Marathon next week. You need to improve your aerobic endurance. Which drug could help you?

Peptide Hormones Develops muscle Makes the body use body fat Reduces tiredness Can stimulate production of red blood cells- improving oxygen uptake Side effects: Thickened blood, irregular heart beat, increased cholesterol, increased risk of diabetes, joint deformities Eg- human growth hormone, erythropoietin (EPO)

Martin Adams You are Martin Adams. You are playing in the darts world final tomorrow evening. You want to stay calm under the pressure of the audience. Which drug could help you?

Beta-blockers Maintain steady heart rate Lowers blood pressure Used as relaxant Side effects: Heart rate can drop so much that there is a danger that it may stop Eg- atenolol, nodolol