This can usually be accomplished by regular aerobic exercise, such as walking, running, swimming, aerobic classes, or any exercise that maintains your heart rate at a fairly high level.
(This; can be accomplished; by regular aerobic exercise; T:usually) (any exercise; maintains; your heart rate; L:at a fairly high level)
This any exercise
can be accomplished maintains
by regular aerobic exercise T:usually
your heart rate L:at a fairly high level