For optimal results, schedule 30 minutes of cardiovascular exercise 3 to 4 times per week.

为了获得最佳效果，每周计划3 - 4次30分钟的心血管锻炼。

youdao

Doctors recommend 30 minutes of cardiovascular exercise three times a week at the bare minimum.

医生建议每周至少进行三次最少30分钟的心血管锻炼。

youdao

Do 30 minutes of cardiovascular exercise including brisk walking, slow jogging, bicycling, or swimming to improve circulation.

做30分钟的心血管机能训练，包括快走、慢跑、骑自行车或者游泳，来改善循环。

youdao

And of course, make sure to get medical clearance from your doctor before stepping up (no pun intended) your cardiovascular exercise regimen.

CNN: Will jogging hurt an obese person's joints?

In addition, don't forget to get regular cardiovascular exercise in addition to strength training to help get, or keep body fat levels down.

CNN: How can I get rid of 'man boobs'?

For cardiovascular exercise, weight-bearing, higher-impact activities such as walking, jogging and aerobics are better than nonweight-bearing or lower-impact exercise such as swimming, cycling and elliptical machines, which put less strain on your muscles and bones.

CNN: How much weight is needed to strengthen my bones?