题目内容：

As we know, prolonged sitting has been linked to cancer, diabetes (糖尿病) and speeding up ageing. However, standing for long periods of time might not be good 1.  you either, according to a new study 2. (publish) last year.

In the 12-year-long study, researchers looked at the workplace habits of 7,000 participants in Ontario Canada and 3. (find) that those who stood at work were twice as likely 4. (catch) heart disease in comparison to those who spent the day sitting down.

Standing for hours on end increases the pressure in the veins (血管), 5. might contribute to the increased risk of heart disease. Prolonged standing has also been linked to chronic back pain and musculoskeletal disorders in the legs.

6. is suggested that employers should focus on wellness programs that target those who are subjected to prolonged periods of standing just as they would target daily 7. (smoker). Those who cannot avoid standing at work should 8. (regular) stretch during breaks to ease the muscles.

With studies 9. (suggest) both sitting and standing for long periods of time carry health risks, perhaps the 10. (solve) is to alternate between the two.