The Conservation Volunteers created and runs Green Gyms® across the UK.
Green Gyms are fun and free outdoor sessions where you will be guided in practical activities such as planting trees, sowing meadows and establishing wildlife ponds.
Unlike other conservation projects, the emphasis is very much on health and fitness - volunteers warm up and cool down in preparation for a range of light to vigorous activities to suit all abilities.
Conservation work is my best workout each week
Green Gym® volunteer
In fact, almost a third more calories can be burnt in some Green Gym® sessions than in an average aerobics class!
>> more info here