How much time is good enough if I only have time for a short workout?

While there may be no set rules for how long your quick workout should last, research has shown benefits of a 10-minute workout that include just one minute of intense exercise (where you increase the pace of your walking, running, or movements). Learn more about the value of short workouts.

Consult your doctor before starting a new exercise regimen.

Besides everyday activities, I have found the best way to keep active is with silver sneakers videos. They range from 2 min. to 30 min.

Check the mayoclinic website.
 For healthy adults they recommend about 30 minutes of moderate exercise and 10 minutes of strength training a day. They also note the most important thing is to just do what you can. Something is better than nothing.

6 times a day, i walk at a fast pace for 10 minutes in my apartment.  4 miles and 60 minutes a day.

3 times a week, i lift dumbbells for 12 minutes.

this works for me.

45 minutes a day.

Even on days when I have a lot to do, I may find myself able to fit 10 minutes in between things.  I find it better than nothing to fit in one of the Denise Austin 10 minute workouts.  

As we r retired I do have time for working out. Before corona I did circuit training 45 minutes 3 days a week plus 1 hour a day biking(Just over 10 miles) each am.

Now that our gym is closed due to corona I bike 2 hours each morning (about 21 miles) monday thru friday and 1 hour a day on the weekend. I now only do 150 arm  curls using 15 lb weights.So my upper body is getting way out of shape. I do miss the circuit training.Am getting enough cardio just need upper body strength training. We now have video classes so will be trying that.