The interior color scheme is cool, and the use of black metal frames for the bar chairs and coffee table help to create a light and airy room. Rugs are very useful in home decorating. Not only do they give interest and provide a soft surface to walk on, but they can also 'mark out' areas such as this one.
On a treadmill, you can accurately set your incline by 1%, 2%, etc. When walking outdoors, you need to use a tool such as MapMyWalk.com to map out your walks and see what the incline really is. I can tell you from experience, that a 5% incline is a real huffer-puffer. 1  for every 1% of grade, you increase your calories burned by about 12% or about 10 more calories per mile for a 150 pound person.  By the time you are at 10% grade, you are burning over twice as many calories per mile.
Popular Calories Burned Searches: Calories Burned For Treadmill: 5% Incline, 12 km/h (5 minutes per km) Calories Burned For Treadmill: 5% Incline, 10 km/h (6 minutes per km) Calories Burned For Treadmill: 5% Incline, 8.5 km/h (7 minutes per km)