Exercise strengthens your heart muscle and increases your lung capacity.

Hey there need any help? Here are some steps on what to do to increase your lung capacity^^

Head Tilt (left and right) – 1 set of 10 reps

Head Nod (up and down) – 1 set of 10 reps

Neck stretch

Arm circles – 1 set of 10 reps

Shoulder circles – 1 set of 10 reps

Waist circles – 1 set of 10 reps

Bend over and touch toes – 1 set of 5 reps

Calf raise – 1 set of 20 reps

Interlock your fingers, extend your hands forward and pull your shoulders back.

Slow spot jogging – 1 set of 20 reps

answer; 4% i believe this is correct;

answer 2 is the right one. jim should measure his snack to make sure he is using the right serving size.