Don't Be a Victim to These Bad Workout Habits

Similar to your cardio workout, if you're not challenging your muscles when it comes to the amount of weight you're lifting, you may be wasting your time. As you get stronger, performing more reps becomes easier, making it take longer and longer to exhaust the muscles you're targeting. Instead, assess how you feel after you do your normal set of reps; if you're not fatiguing at eight to 12 reps like you were in the beginning, it may be time to test the waters with a heavier dumbbell. Read more about finding the right dumbbell weight for you.