Hitting the stairs

A few days ago I found out that a buddy of mine was walking the stairs every afternoon during work. So, taking his lead, I decided to do the same. I walk from floor 2 to floor 10 each afternoon. It's about 170 steps each way. On day 1 I started with 2 climbs...but I'm already up to 3 climbs. It's a quick 9-10 minute workout that can only help to strengthen my legs.