BalanceFrom Stair Climber Commercial Grade Stair Step Machine for Cardio and Lower Body Workouts

Cardio (from Greek καρδίᾱ kardia, 'heart') may refer to:

• Of the Heart
• Cardiology
  • Cardiovascular system
• Cardiovascular fitness
• Aerobic exercise, also known as cardio
• Cardio (album), a 2010 album by Miguel Bosé

Climber, or Climbers may refer to:

• Climber, a participant in the activity of climbing
• Climber, general name for a vine or other climbing plant
• Climber, or climbing specialist, a road bicycle racer who can ride especially well on highly inclined roads
• Climber (BEAM), a robot that goes upward or downward on a track
• Climber (video game), by Nintendo
• Climber Motor Company, a motor vehicle manufacturer in Arkansas
• Climbers (novel), a 1989 novel by M. John Harrison
• The Climber (1917 film), a silent drama film
• The Climber (1966 film), a Yugoslav drama film
• The Climber (1975 film), an Italian crime film
• The Climber (album), an album by Judge Smith
• Dynamic Sport Climber, a Polish paramotor design
• The Climber, or Kokou no Hito, a Japanese climbing manga

Commercial may refer to:

• a dose of advertising conveyed through media (such as radio or television)
  • Radio advertisement
  • Television advertisement
• (adjective for) commerce, a system of voluntary exchange of products and services
  • (adjective for) trade, the trading of something of economic value such as goods, services, information or money
• Two functional constituencies in elections for the Legislative Council of Hong Kong:
  • Commercial (First)
  • Commercial (Second)
• Commercial (album), a 2009 album by Los Amigos Invisibles
• Commercial broadcasting
• Commercial style or early Chicago school, an American architectural style
• Commercial Drive, Vancouver, a road in Vancouver, British Columbia, Canada
• Commercial Township, New Jersey, in Cumberland County, New Jersey

Grade most commonly refers to:

• Grading in education, a measurement of a student's performance
• Grade, the number of the year a student has reached in a given educational stage
• Grade (slope), the steepness of a slope
• Graded voting

Grade or grading may also refer to:

Lower may refer to:

• Lower (surname)
• Lower Township, New Jersey
• Lower Receiver (firearms)
• Lower Wick Gloucestershire, England

A machine is a physical system that uses power to apply forces and control movement to perform an action. The term is commonly applied to artificial devices, such as those employing engines or motors, but also to natural biological macromolecules, such as molecular machines. Machines can be driven by animals and people, by natural forces such as wind and water, and by chemical, thermal, or electrical power, and include a system of mechanisms that shape the actuator input to achieve a specific application of output forces and movement. They can also include computers and sensors that monitor performance and plan movement, often called mechanical systems.

Renaissance natural philosophers identified six simple machines which were the elementary devices that put a load into motion, and calculated the ratio of output force to input force, known today as mechanical advantage.

Modern machines are complex systems that consist of structural elements, mechanisms and control components and include interfaces for convenient use. Examples include: a wide range of vehicles, such as trains, automobiles, boats and airplanes; appliances in the home and office, including computers, building air handling and water handling systems; as well as farm machinery, machine tools and factory automation systems and robots.