For me, cycling to work is quicker and cheaper than using public transport and it's my only form of exercise. And whereas going to the gym to lose a few pounds takes effort and commitment, cycling has just become part of the work routine. Clare Hyde from Cancer Research UK says "This study helps to highlight the potential benefits of building activity into your everyday life. Anything that gets you a bit hot and out of breath … can help make a difference."

But what exactly is it that is making cycling a much healthier option? The research, published in the British Medical Journal, found it wasn't the result of weight loss but it could be that cyclists are leaner and have lower levels of inflammation in the body.

Of course, any exercise is good for you but it's thought that cycling is better than walking because the activity is longer and more intense. Dr Jason Gill, from the University of Glasgow, told the BBC "You need to get to work every day so if you built cycling into the day it essentially takes willpower out of the equation."  For me, it's the best and most enjoyable workout I can have – and I don't need to wear skin-tight lycra clothes, as long as I wear the most important accessory, a helmet.

词汇表 risk 风险

heart disease 心脏病

physical activity 体育活动

two wheels （比喻）自行车

benefit 好处、益处

pedalling 骑车

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