The beginning of every workout should start with
C) A warm-up.
Curl ups and push ups test endurance because they see if your body can produce enough oxygen for you to do the exercise for long periods of time
Protein has many roles in your body. It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.
Anxiety interferes with peoples lives by making them challenge the decisions they make or if there were going to do something the would rethink and miss out on opportunities it can also make them feel left out as they don't do what others do.
Hope that helped :)