Climbing the stairs
Climbing the stairs is actually one of the tough workouts. Though you will feel that initially climbing the stairs is not a herculean task, as it moves on you will get to know the pain in your thighs and abs. This activity actually activates the muscles in your legs and increases the stability in your thighs and knees. Also while you climb the stairs vigorously your heart rates tend to increase and the cardiovascular function is improved. Also doing lots of stairs will make your calves and butt look fantastic.
Rowing is yet another common task that can be done. You can also use a rowing machine which is actually a low-impact way to build upper body strength and burn lots of calories. Rowing is an aerobic exercise which improves your cardiovascular circulation. Also as you go on practicing rowing, activates muscles all across your body, including your legs, glutes, core, back, shoulders, and arms. It is a full body exercise that increases the resistance on the muscles. Overall it perfectly provides you with a more aerobic-focused workout.
These are a few exercises which are cardiovascular and help strengthen abdominal muscles. These may be performed before getting on to the bike also. This exercise requires more abdominal muscle activity, body rotation and abdominal stabilization. Lie on the back with hands behind the head. Raise the knees towards the chest and lift the shoulders and head off the ground. Bring the right elbow towards the left knee and straighten the right leg. Switch sides- bring the left leg towards the right knee and straighten the left leg. Continue switching sides to stimulate a pedaling motion. Breathing should be even and relaxed. Repeat 1-3 sets for 12-16 times.