"Raise and lower both legs. Continue until mildly tired. This is an excellent exercise for the abdominal muscles." -Foster, 1921

Exercise

"Raise and lower both legs. Continue until mildly tired. This is an excellent exercise for the abdominal…

"Lie flat on the back...hands clasped behind head. Pull up to sitting position." -Foster, 1921

Exercise

"Lie flat on the back...hands clasped behind head. Pull up to sitting position." -Foster, 1921