To maintain a healthy lifestyle, one should engage in regular exercise like brisk walking, sit-ups, push-ups, jogging, and squats, either outdoors or at the gym using equipment such as barbells, treadmills, and dumbbells. Staying fit helps burn calories, support weight loss when combined with a diet, and allows one to put on muscle with strength training, though eating too much can cause unwanted weight gain. Many workout at gyms daily, focusing on different body parts each time like abs, arms, or legs.