Two athletes are training over a two-week period to increase the number of push-ups each can do consecutively. Athlete A can do 16 push-ups to start, and increases his total by 2 each day. Athlete B's progress is charted in the table. Compare the initial values for each. What does the initial value mean in this situation?
Athlete B Push-up Progress
Day Number of Push-ups
0 12
1 15
2 18
3 21


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