It is ideal to use a cadence of more than 100 rpm and a relatively low gear. For example, on an 18-speed bike, place it in low and sixth, low being the smallest gear by the pedals and sixth being the sixth gear outward from the rear wheel.
Thus the time period for becoming a lawyer after high school graduation is as follows: 4 years for undergrad + 3 years of law school + 6 months for bar study, passing, swearing in.
Becoming a lawyer requires at least seven years of academic studies --- four years for an undergraduate bachelor's degree, plus three years of law school. However, the time needed to truly develop into a lawyer is much longer.