Answer:
Always stretch, never bend your knees when you are doing things like leg presses and stay hydrated and fed to be sure you get the best workout possible
Step-by-step explanation:
If you don't stretch before a hard workout you risk pulling a muscle and messing up your schedule or workouts, bending your knees in a workout that requires perfectly straight legs risks injury to your legs and muscles, and staying hydrated and fed is very important for thing like pre and post workout because of lactic acid, it builds in muscles during your workout so staying hydrated keeps it moving through your body and makes you less sore especially the day after your workout.