【Manyrunnersandgymmembersfeelthatmusicmakesexercisemoreenjoyable．However，theymightnotknowthatscientistshavefoundthatsomekindsofmusiccanimprovepeople'senergyby15%．ThiswasdiscoveredbyCostasKarageorghisatBrunelU】
Many runners and gym members feel that music makes exercise more enjoyable．However，they might not know that scientists have found that some kinds of music can improve people's energy by 15%．This was discovered by Costas Karageorghis at Brunel University's School of Sport and Education in London．Karageorghis has worked with organizations like Nike and with many champion athletes．In the study，30people listened to inspiring music by Queen，the Red Hot Chili Peppers and Madonna．They did exercise at the same time．
When they were doing exercise in time with the music，people showed higher energy levels．Even when they were doing very hard exercise，they were positive about how they felt．When people are doing exercise，their nerves send messages saying that their body is getting tired．However，when they are listening to music at the same time，these messages are blocked．Karageorghis thinks this is because the music causes part of the brain to send different messages to the body that make it feel happy and relaxed．
Karageorghis'work shows that different types of music can have different effects on different people．The effect of some music can also depend on how tiring the exercise is．Karageorghis said that outgoing people prefer faster and louder kinds of music compared to reserved people．This is because，for the music to have an effect，the brains of outgoing people need more stimulation than the brains of reserved people．Reserved people want to feel less worried and so have better results when the music makes them feel relaxed．
Karageorghis was asked to provide music for the"Run to the Beat"half marathon in the UK．"I have lots of other exciting projects that I am working on．"said Karageorghis．One of these is to find out if the speed of the music we listen to has an effect on our heart rate while we exercise．
33．Why do people feel less tired when they exercise with music？___
A．Music makes people's muscles relax．
