Australia’s Physical Activity and Sedentary Behaviour Guidelines for adults recommend at least 150 minutes of moderate-intensity aerobic activity per week. You can knock that out in just 30 minutes a day, 5 days a week. You’ll get added benefits by including activities that help strengthen muscles twice a week, such as exercising with weights, working with resistance bands, heavy gardening or even carrying shopping.
Moderate intensity activity will make you feel warmer, breathe harder and make your heart beat faster than usual, but you should still be able to carry on a conversation.
Vigorous intensity activities will push your body a little further. They will require a higher amount of effort. There is substantial evidence that vigorous activity can bring health benefits over and above that of moderate activity. If you’re working at this level, you won’t be able to say more than a few words without pausing for a breath. You’ll probably get warm and begin to sweat.
For optimal benefits, include both moderate- and vigorous-intensity activity in your routine along with strengthening and stretching exercises.
Department of Health. Australia’s Physical Activity and Sedentary Behaviour Guidelines and the Australian 24-hour Movement Guidelines. Retrieved from: https://www1.health.gov.au/internet/main/publishing.nsf/Content/health-pubhlth-strateg-phys-act-guidelines.