At the weekend, officers carried out a "memory-jogging" exercise, stopping pedestrians, motorists and cyclists in Magazine Lane.

BBC: Una Crown's Wisbech murder: ?10,000 reward offered

One week after her body was found, officers from Cambridgeshire Police carried out a "memory-jogging" exercise, stopping pedestrians, motorists and cyclists in Magazine Lane.

BBC: Una Crown's Wisbech murder: New leads after appeal

This should include vigorous (jogging) and moderate aerobic exercise (a brisk walk), as well as twice-weekly activities, such as weight training, which maintain or increase muscular strength and endurance.

BBC: NEWS | Health | Exercise 'must be tough to work'

For cardiovascular exercise, weight-bearing, higher-impact activities such as walking, jogging and aerobics are better than nonweight-bearing or lower-impact exercise such as swimming, cycling and elliptical machines, which put less strain on your muscles and bones.

CNN: How much weight is needed to strengthen my bones?