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.
There is a lot involved in order to become a criminal lawyer. There are seven to eight years of schooling depending on the law degree. Then there is the time it takes to take the bar exam, wait for results, and possibly retake the exam.