The study, by health and fitness app Jonple, found 47 per cent used the pandemic as a motivation to get themselves fit or stay in shape.
The most popular activities to keep fit were walking more (62 per cent), followed by running (41 per cent), cycling (31 per cent) and swimming (23 per cent).
Andrew Jones, CEO and co-founder of Jonple, said: “The last nine months have been unprecedented with the pandemic putting huge pressure on the nation’s mental and physical wellbeing.
“It is heartening to see how many people have set themselves a goal to get fit and managed to maintain it throughout the year.
“It is fair to say the pandemic has acted as a motivator for many people to improve their health in 2020.
“As we relax over the Christmas period with a few mince pies, many of us will be thinking about ways to build on the good work from 2020 or look at ways to improve our health and fitness next year.”
The study also found that alongside exercise regimes, almost one in five (18 per cent) started a new diet in January 2020, with 61 per cent maintaining it throughout the year.
But those who quit did so after maintaining the diet for an average for six weeks.
One third (33 per cent) said the pandemic had made them take a healthier approach to eating, although 16 per cent said it had gone the opposite way.
More than half (54 per cent) went on fitness drives this year to lose weight, 56 per cent to feel better mentally and 48 per cent to look better physically.
Meanwhile, 55 per cent wanted to improve their physical strength.