Madonna's personal trainer Nicole Winhoffer says she constantly updates the singer's workouts to challenge her muscles.
Madonna's workouts are tailored to ''shock'' her body.
The superstar's personal trainer Nicole Winhoffer - who has also worked with the likes of Rachel Weisz and Stella Mccartney - says she has been whipping the ultra-toned singer into shape since 2009 thanks to a challenging custom-made fitness program, which is updated every week.
Nicole revealed to E! News: ''We work out six days a week, 90 minutes a day. I create a new program each week. Mondays we learn the new program together. We focus on new muscle groups, new music and planting the programs in our body. Our workouts are challenging, serious and always focusing on shocking the body!''
The trainer-to-the-stars and Madonna have just opened their eighth Hard Candy Fitness club, and Nicole insists a body like the 'Music' hitmaker's is achievable with hard work and dedication.
She said: ''Madonna stands as an icon. Her body, work ethic, and persistence is an inspiration to the people. The gym is a place where people can experience the 'Addicted to Sweat' workout that is inspired by the workouts I have been doing with Madonna for five years.
''I update the program every three months, so the gym always has fresh new content.''
The trainer also explained she adapts the singer's workouts depending on her concert routines.
Nicole added: ''I watch her in action, learn as much as I can and apply them to our workout. I watch each concert and take notes to inform me for our next day's session. She is an athlete, no doubt. I pay attention to every detail.''
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