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# Muscle Physiology

3 answers

- [I am on the three day get lean program, and wondered why there are exercises for calfs and forearms in every workout. This is not a complaint, just a curiosity...](https://www.workoutsmart.com/ask-dan/muscle-physiology/i-am-on-the-three/465)
- [I hear people say that the only way to gain "muscle size" is to work the muscle to failure. I did this once with Seated Curls, and worked my biceps to failure. The next day I could barely straighten my arms\! What is the proper way to do exercises to build bicep size?](https://www.workoutsmart.com/ask-dan/muscle-physiology/i-hear-people-say-that/811)
- [Thank you for such an informative and interactive website. After a few years of lifting I have turned my attention from the muscle \& fitness magazines to more of the strength and conditioining and sports medicine journals. Your website falls perfectly into that mix. My question is: Can you combine a week of heavy strength training (2-6 reps) followed by week of growth oriented training (8-12 reps) and have good results in both categories?](https://www.workoutsmart.com/ask-dan/muscle-physiology/thank-you-for-such-an/778)

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