With a PSA of .99, you can swing from the rafters every day if you want. Enlarged prostates and PSA have some relationship, but it is not until you have PSA's over 4 that I would worry.
Oh, and you can have sex 3 times day too. If it causes your PSA to double, you are still ok (which it won't). Don't confuse small variation in PSA which are natural, with PC risk.
Good luck on your journey.
Age 58, PSA 4.47 Biopsy - 2/12 cores , Gleason 4 + 5 = 9
Da Vinci, Cleveland Clinic 4/14/09 Nerves spared, but carved up a little.
0/23 lymph nodes involved pT3a NO MX
Catheter and 2 stints in ureters for 2 weeks .
Neg Margins, bladder neck negative
Living the Good Life, cancer free 6 week PSA <.03
3 month PSA <.01 (different lab)
5 month PSA <.03 (undetectable)
6 Month PSA <.01
1 pad a day, no progress on ED. Trimix injection
No pads, 1/1/10, 9 month PSA < .01
1 year psa (364 days) .01