When is High Blood Pressure determined by taking the pressure right after exercise or after rest?

My husband was put on BP pills about 10 years ago. He has improved his life style in the past 5 years dramatically. He took himself off the pills (which I know is dangerous). After monitoring his resting BP for a period of 56 days, at the same time each day, his upper pressure was only over 140, 7 times (never over 150) and his lower pressure was only over 90, 5 times (never over 95). When he went back to the Dr, he took my husband's blood pressure after my husband had gone up a couple flights of stairs and without letting him rest for a few minutes (my husband asked if he shouldn't rest a few minutes before taking it and the Dr said no). From that one reading, the Dr said my husband needs to go back on the BP pills. My husband showed the Dr the record of his BP over the 56 day period, but the Dr said that doesn't matter. This doesn't sound like a correct process to evaluate my husband's need for BP pills.

Thank you.