Shift your weight onto your elbows as you step back with the other foot and place your feet together. Hold until your form starts to fail or until you are no longer able to keep our abs pulled to your back. Step into the ball with one foot at a time. 1  Equipment notes.
For comparison's sake, most modern trucks manage between 5.5 and 6.5 mpg. For most long-haul truck drivers, an increase in fuel economy of 54 percent would equate to a savings of around $25,000 per year at current diesel prices.
20,000 miles driven in a year divided by 15 mpg = 1,333 gallons used per year. 1,333 X $3.00 (for each gallon of regular gas) = $3,999 spent on fuel for the year. The three modifications we've talked about could possibly increase the truck's fuel economy by 3 mpg.