<span>It is possible. If a person worked out a lot and lost more calories than what he/she was consuming, they would be losing weight. This would, however, be very unhealthy because you need proper nutrition, but it doesn't mean that it's not possible. Not only could you hurt yourself by breaking something, but you might also get a metabolic disease or your kidneys and liver might fail.</span>
You burn more calories during higher intensity workouts because you loosed a lot of sugar from the body.
OK so basically you need to set a time schedule that gives you enough time for daily chores and needs and then have time set out for you to have leisure but also make sure to include at least 8 hours of sleep.