There was a theory by Psychologist B.F Skinner that Behavior is strengthened by negative outcime by stopping or removing a negative outcome or averse stimulus that might cause discomfort
16.4 x 3 = 49.2cm however, if you take into consideration the width of the blade cutting the board, you would have to add that width twice to get the actual length of the board.
Answer:
Keep a journal of all the achievements you have done and gone threw. You can also ask friend, family or co-workers if they have seen improvement.
