C - Being fit; technology

To improve her fitness, she decided to _______ by doing regular workouts. (Phrasal verb; become stronger and firmer)

He wants to ____________ before the rugby season starts by increasing his protein intake. (become more muscular; phrasal verb)

After the holiday indulgence, it's time to ___________ weight and get back to exercising regularly. (lose)

She runs three times a week to build ______________ for the upcoming marathon.

To gain muscle, he plans to _________ weights at the gym every other day. (other than lift)

She incorporates ______________ into her routine to strengthen her core. (a core exercise designed to strengthen your abdominal muscles)

________________ are an essential part of her workout because they help strengthen her legs. (a kind of exercise with the knees bent and the weight on your feet.)

_____________________ before a run is important to prevent injuries and improve flexibility.

He has decided to _________________ that limits carbohydrates to boost his health.

If you don't stretch properly, you might ________________ a muscle during your workout. (or strain a muscle, when you overstretch or tear a muscle)