Some 30 minutes. No mirrors. No men. Vivafit promises that and more with its express workout, a 30-minute circuit − totally doable before work or during a lunch break − that features 20 stations combining hydraulic machines and recovery platforms for a complete workout. Alternatively, sign up for their 35-minute group exercise Bodyvive, Bodybalance or Pilates classes. With its limited membership, the women’s gym from Europe will ensure that you stay on track with its personalised approach: tracking your progress each month, you can expect a reminder call if you stint on exercise for ten days straight.