What it's for: Improving bike-handling, safety
These skills are important, not just for safety but also to avoid flat tires and to keep your wheels true. As with the other drills, there is a natural progression here.
Front Wheel: Assuming your parking lot has white lines to indicate parking spaces, practice riding the length of the lot, hopping your front wheel over each line as you cross it. Try to use only the arms to pull up on the bars.
Rear Wheel: Now do the same thing but with your rear wheel. You'll use your legs to pull up on the pedals and lift the rear wheel off the ground.
Both Wheels: Once you've mastered the front and rear wheel separately it is time to get both wheels off the ground at the same time. At a jogging speed, bend your knees, push the bike down into the ground and then burst upwards, pulling up simultaneously on the pedals and the handlebars. Once you feel comfortable jumping white lines, you can try jumping bigger obstacles such as soda cans or sticks.
Advanced Bunny Hopping: Once you can easily jump your bike over curbs and potholes, give these advanced skills a try. Ride up to a soda can so your back wheel is even with the can. Bunny hop just the rear wheel. While it's in the air, swing it to the side and try to knock the can over. Next, try a sideways bunny hop. Ride parallel to a white line or an obstacle. Do a bunny hop and once you are off the ground, move the entire bike sideways and over the line or object. Practice these drills to the right and then to the left.