Fitness studio franchise YourZone45 is planning to open a fifth site in West Yorkshire this spring.

The business, which has partnered with wearable technology firm MyZone for its UK expansion, has four studios in Braintree, Chelmsford and Colchester, all in Essex, and Colliers Wood in southwest London.

Each franchise is 2,000-3,000sq ft (186-279sq m), with a target of 300 members per studio.

Developed by personal trainer Chris Elms, YourZone45 offers 45-minute interval training workouts designed to make members fitter, stronger and faster.

Each workout is delivered by a fitness coach and guided by a heart rate system, with members’ heart rate percentages displayed on screens. The goal is for members to achieve 84-100 per cent of their maximum heart rate for at least 12 to 20 minutes so they continue to burn calories for up to 36 hours after their workout.

MyZone is included in the cost of membership and approximately 95 per cent of members are using the technology. MyZone works with more than 3,500 facilities across 32 countries.