StretchBreak 6.5 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The following version: 6.5 is the most frequently downloaded one by the program users. We recommend checking the downloaded files with any free antivirus. This Mac app is an intellectual property of Para Technologies. The program is included in Lifestyle Tools.
From the developer:
A team of health care professionals developed Stretch Break to increase circulation, relieve tension, boost your energy level, and help guard against Repetitive Strain Injuries (RSIs).
Once installed on your hard drive, Stretch Break gently reminds you to take periodic breaks while using your computer. You are invited to perform a series of low-impact stretches illustrated on the screen.
You may want to check out more Mac applications, such as Athlete's Diary, MyMedicationTracker- or Pulsphotometer, which might be related to StretchBreak.