It is helpful to know what the guidelines are for exercise. You might want to see if your country has its own guidelines if you do not live in North America.
Remember when looking at the following guidelines that they are just guidelines. You will need to do what is best for you.
The guidelines for exercise for Canadian Adults according to Canadian Physical Activity Guidelines are;
To achieve health benefits, adults aged 18-64 years should accumulate at least 150 minutes of moderate- to vigorous-intensity aerobic physical activity per week, in bouts of 10 minutes or more.
It is also beneficial to add muscle and bone strengthening activities using major muscle groups, at least 2 days per week.
More physical activity provides greater health benefits.
The guidelines for exercise for American Adults according to Physical Activity Guidelines for Americans are;
Adults should move more and sit less throughout the day. Some physical activity is better than none. Adults who sit less and do any amount of moderate-to-vigorous physical activity gain some health benefits.
For substantial health benefits, adults should do at least 150 minutes (2hours and 30 minutes) to 300 minutes (5 hours) a week of moderate-intensity, or 75 minutes (1 hour and 15 minutes) to 150 minutes (2 hours and 30 minutes) a week of vigorous-intensity aerobic physical activity, or an equivalent combination of moderate- and vigorous-intensity aerobic activity. Preferably, aerobic activity should be spread throughout the week.
Additional health benefits are gained by engaging in physical activity beyond the equivalent of 300 minutes (5 hours) of moderate-intensity physical activity a week.
Adults should also do muscle-strengthening activities of moderate or greater intensity and that involve all major muscle groups on 2 or more days a week, as these activities provide additional health benefits.
Both the Canadian and American Guidelines give recommendations for other age groups.