Tandem stance

Description: Stand with one foot in front the other for 20-30 seconds. Then, switch feet. Stand next to a sturdy object that you can hold on to in case you lose your balance. [ID: bal01]

Additional info:

Video example, www.youtube.com/watch?v=ra7tzlPxnsQ
A longer, more detailed video example, www.youtube.com/watch?v=gJdl-MNMxlY

Image source: NASM, nasm.org