Choose the right bra based on personal measurements

Use a fabric pen to trace the bottom of the wire onto the bra cups. Make sure you have approximately 3/8 of an inch of fabric remaining at the bottom of the bra, which you need for sewing over the wire.

Lay the channeling on top of the inside stitching of the bra cup. Line up the two evenly. Allow 1/2 inch of the channeling to hang off at each end.

Sew the channeling to the bra's seam on both sides of the channeling. The wire will have to fit inside of the channeling so make sure you do not sew the channeling shut.

Cut the end pieces of the channeling off and sew the ends. Be careful when sewing over wire so that the needle of the sewing machine does not come down onto the wire and crack.

Determine the activity-level needs of the lingeries for adequate support. A high-impact sport such as running, soccer or aerobics requires strong elastic fibers to keep the breasts stationary. Fast walking and skiing are medium-impact sports that require less lift and support. A low-impact sport such as yoga, strolling or weight training requires the least amount of compression and shaping of the breasts.

Choose the right bra based on personal measurements, from three separate bra constructions. A compression bra restricts breast motion and has the highest amount of support. Women with a curvy figure and an A- or B-sized cup will find this sports bra the most comfortable. An encapsulated or natural-shape athletic bra has sewn-in structure to lift heavier breasts. Women with a C-, D- or DD-sized cup will find this bra the most supportive. Try an underwire sports bra in either an encapsulated or natural shape for an extra dimension of support for full-heavy breasts ranging from DD and above.

Pick the racer-back style if additional compression on the breasts is necessary. A traditional back may cut into your shoulders if the strap is too narrow. Use a mirror that reflects three sides of the bra at once. Bend and stretch to test the comfort and coverage of a sports bra. Run in place for 30 seconds to determine the support and breast motion for high-impact sports.