This results in shortness of breath and pulmonary edema. Common causes of left-sided failure include the following: 1  Drinking too much alcohol. 2  Heart attack. 3  Heart muscle infections. 4  High blood pressure. 5  Hypothyroidism. 6  Leaking or narrow heart valves.
Â· just now. Report Abuse. Since you are trying to tone, do 2 or 3 sets of 12-15 reps. In other words, do 12-15 squats or leg presses, then rest 30 seconds to one minute, and repeat one or two more times. If you were trying to gain muscle mass, you would do less reps and more sets with a higher weight.
For example, do about 8-10 of these close tricep position pushups and then immediately lie on the bench and dumbbell extenstions for about 10 reps. Repeat for a total of 4 supersets (the number of pushups will probably decrease as you go along in sets). You will feel a tremendous burn.