To calculate all the breaths you take in a lifetime we have to know a couple of things. First of all we have to know the size (volume) of an average breath. Secondly we have to know how frequent we breathe (number of breaths per minute).And finally we have to decide how long you are going to live.o calculate all the breaths you take in a lifetime we have to know a couple of things. First of all we have to know the size (volume) of an average breath. Secondly we have to know how frequent we breathe (number of breaths per minute). And finally we have to decide how long you are going to live.
Step #1: Make the slingshot. 1  Make elastic bands. 2  To begin, tie 2 rubber bands together to make a long band. 3  Make a pocket. 4  Cut a small rectangle out of a scrap of leather or sturdy cloth. 5  Assemble. 6  Tie the rubber bands to the ends of a forked stick.
The Slingshot features a design similar to the X-Bow, complete with a side-by-side seating arrangement, but it brings in the three-wheel layout of the Can-Am and Morgan. Propulsion comes from a 2.4-liter, Ecotec four-cylinder sourced from General Motors that sends 173 ponies to the pavement.he Slingshot features a design similar to the X-Bow, complete with a side-by-side seating arrangement, but it brings in the three-wheel layout of the Can-Am and Morgan. Propulsion comes from a 2.4-liter, Ecotec four-cylinder sourced from General Motors that sends 173 ponies to the pavement.