Our own extraordinary women.

ZADI was co-founded by Adala Bolto and Diana Williams. Adala is the CEO of ZADI Training and Diana is the CEO of Australia’s No. 1 female-only health and fitness club, Fernwood Fitness.


Adala Bolto

Adala Bolto has a strong passion and dedication to fitness with more than 12 years in the industry. She has excelled in her career as a personal trainer and group fitness instructor, specialising in tailored programs for 1:1 female clients and small group training.

Leveraging her industry experience as well as her strong business acumen and entrepreneurial skills, Adala first joined Australia’s leading female fitness brand, Fernwood, as a club manager. In 2014, she then went on to become the franchisee of Fernwood Ryde in Sydney.

As her passion for fitness grew and her loyal clientele continued to smash their goals, Adala saw a gap in the Australian market for a bespoke fitness program targeting younger women. In July 2017, equipped with a clever idea and a strong business plan, Adala teamed up with Fernwood and co-founded ZADI Training.

Now, ZADI Training is set to make its mark in the fitness industry with ambitious plans to roll out many locations both locally and internationally.


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Di Williams

Since launching in 1989, Fernwood has become synonymous with women’s health and fitness in Australia. In 2008, Fernwood was named joint winner of BRW's Most Successful Private Business (under $100 million) and has regularly appeared in their Top 10 fastest growing private companies.

Nearly 30 years on, Fernwood is the largest organisation of its kind in Australia with 70 clubs around the country, more than 75,000 members, 2,200 employees and 89 per cent unprompted recall of its brand name.

Since opening the first club in Bendigo, Fernwood founder and CEO Diana Williams has been a trailblazer in the fitness industry and in 2005 was awarded Telstra Businesswoman of the Year. ZADI Training is the latest chapter of her innovative success story, as she joins Adala as co-founder of Australia’s newest fitness movement.