What Are The Best Workouts For A 20 Year Old Male If A Male Of 20 Years Old, 5'11 And Weighs 127 Pounds, Gain Significant Muscle Mass Without Use Of Steroids?

If a male of 20 years old, 5'11 and weighs 127 pounds, gain significant muscle mass without use of steroids? - what are the best workouts for a 20 year old male

Of course, with the right diet and exercise routine, it is possible, 20-30 pounds of muscle mass on one or two years to win?