Fusion Lifestyle and Charnwood Borough Council announced the £1m investment earlier this year as part of a new contract meaning the partnership will continue for a further five years.
The extensive works will see improvements at Loughborough, Soar Valley and South Charnwood leisure centres including new gym equipment. In addition, all three sites will be transformed with a new layout, lighting and flooring.
All exercise studios will be upgraded and will have new equipment. New purpose-built spin studios will also be created at Loughborough and Soar Valley and a brand-new holistic studio and sauna will be added at Loughborough Leisure Centre.
A further £150,000 will be invested in LED lighting at all three centres to help reduce carbon emissions.
Cllr Leigh Harper-Davies, the Council's lead member for community support said: "I'm pleased work to upgrade some of the facilities at our leisure centres will soon be underway.
"We know how much residents have enjoyed being back at the gym or in the pool and this £1m investment programme will ensure each centre continues to provide communities with high quality leisure facilities and value for money.
"There will be some minor disruption along the way while work is being carried out and I would like to thank people in advance for their patience."
While works are being carried out, visitors may notice some minor disruption. We will update our members and regular customers with email updates, and we encourage visitors to check on each leisure centre website for the latest information.
We are hoping for the improvement works to be completed towards the end of the year.