Perfect Sports Bra Fit Prevents Workout Breast Pain
A new study in Frontiers in Sports and Active Living found that greater breast support during running is associated with increased knee joint stiffness, altering the lower body biomechanics of female runners. Specifically, a low support bra was associated with a 2% increase in knee joint stiffness, and a high support bra with 5%. Overall, a well-designed sports bra could increase a female’s running performance by 7%.
Running is one of the most accessible forms of exercise,for women particularly, a well-designed sports bra protects from exercise-induced breast pain, which can be a significant barrier to practicing sports. Up to 72% of women experience breast pain while running. Previous research has shown that the increased breast support sports bras offer not only influences breast movement but can also positively influence running performance. Greater breast support bras has been linked to lower oxygen consumption and better range of motion.
Biomechanics of running
During walking, a woman’s breasts move the same amount in and out, up and down and from side to side: about 33% in each dimension.Up the pace to a jog or a run, and the movement is split: 51% up and down, 22% side to side and 27% in and out. The overall pattern is a figure of eight (on it’s side).
Why Every Workout Deserves a Sports Bra
Contrary to popular belief, sports bras are not just about style or designed solely for women with larger breasts .The primary goal of a supportive sports bras is to reduce breast movement during exercise. Since breasts are made up of fat, ligaments, and skin, and contain no muscle so they rely entirely on external support to avoid discomfort and prevent long-term damage, such as permanent ligament damage which can lead to sagging over time.
Why You Might Feel Pain
Chest Pain
Breathability isn’t just about staying cool — it’s about helping your body perform better. When your sports bra feels too tight or traps heat, it can actually restrict your breathing and limit the oxygen your muscles need. The result? Faster fatigue and less endurance during your workouts. That’s why a well-ventilated design matters. The WANAYOU breathable racerback sports bra keeps airflow steady and comfort high, so you can move freely from warm-up to cooldown.
Back and Shoulder Pain
Compression bras are meant to feel snug — that’s how they minimize bounce. But if they don’t have wide, supportive straps to share the weight, all that pressure ends up on your shoulders. Over time, that can lead to upper back tension and sore shoulders, especially during high-impact workouts. A well-designed bra should lift and support, not make your muscles work overtime.
The Fix: Opt for the Right Type and Fit
Choosing the right type of sports bra is just as crucial as getting the proper fit. If you’re doing high-impact exercises, opt for a bra that offers a combination of encapsulation and compression, as it provides the most comprehensive support. Make sure the band is firm, it should be snug enough to keep everything in place but not so tight that it restricts movement or breathing.
1. Band Fit
Snug Fit: The sports bra band should fit tight around the ribcage without squeezing uncomfortably. You should be able to slip two fingers between the band and your skin.
Level Band: It needs to sit level across your back, not riding up. If it does, the band might be too loose or the straps too tight.
No Digging: The bands are not supposed to dig into your skin or leave marks.
2. Strap Fit
Straps help distribute the weight of your breasts and provide additional support. They should be:
The straps should sit firmly on your shoulders without digging in or slipping off. Wider or cross fit straps like WANAYOU Ribbed Strappy Running Sports Bra offer better support.
No Digging or Slipping: If the straps dig into your shoulders or slip off frequently, then the bra is ill-fitting.
3. Cup Fit
No Gaps or Wrinkles: The cups should lie flat against your breasts. If there are any wrinkles or gaps in the cups, they're not the right fit, and you should size down.
Separation: The center panel between the cups is supposed to lie flat against your breastbone, ensuring the breasts are separated and supported.
So, if you're someone who's been dealing with breast pain during exercise, it might be time to invest in a good ladies' sports bra. At WANAYOU supply, we've got a wide range of sports bras to suit different needs and preferences. Whether you're a beginner just starting out with exercise or a seasoned athlete, we've got something for you.
We understand that every woman's body is unique, and that's why we offer a variety of sizes, styles, and levels of support.