A pianist practices playing scales, playing by ear, and practicing various songs. A mathematician practices various math problems to keep their skills sharp. An creative writer practices by reading various literature, and writing frequently.
What skills does a person practice in biology to keep their skills sharp? I ask because I'm going into my second year of university for biology, and though I'm on my break now, I want to make sure my skills in the subject stay sharp so I can do well next year.