For those who are already flagging with their New Year's resolutions, it could be the perfect way to get motivated.
Exercising not only trims the waistline but will substantially increase your salary, according to scientists.
Going for a jog, swimming or lifting weights in the gym three times a week could boost your income by up to nine per cent.
Even taking moderate exercise such as a regular walk has a positive effect on earnings, a study has found.
Employers may view those participating in regular activity as more determined and dedicated.
Fit staff were also more likely to work harder because of the psychological – as well as physical – benefits of keeping fit.
The study examined two questionnaires in the US involving more than 12,000 people.
Details about salaries and the extent to which people exercised were analysed.
The researchers found that people exercising three times a week could expect a salary between six and nine per cent greater than those who do not.
For those exercising between one and three times a month, the benefit was still an additional five per cent.
The report, by Dr Vasilios Kosteas from Cleveland State University in Ohio, said: 'In addition to the positive impacts on heart health, weight and other medical issues, studies show that exercise leads to improved mental function, psychological condition and higher energy levels.
'All three of these traits can translate into higher earnings.'