For substantial health benefits, adults should do at least 150 minutes (2 hours and 30 minutes) a week of moderate-intensity, or 75 minutes (1 hour and 15 minutes) a week of vigorous-intensity aerobic physical activity, or an equivalent combination of moderate- and vigorous-intensity aerobic activity.
No it cannot. All it will do is build muscle which= 0 flexibility and also the muscle you build will eventually turn to fat if you stop working out.
Answer: If you work, you will most likely be tired for a good chunk of the day, you will also need more rest. You will have less time to do normal activities, and you will have more commitments to stick with. Also, working usually makes people more organized and disciplined
Explanation: