Using a foam roller benefits a faster recovery, improves mobility, and therefore prevents injuries. It's not as pleasant as an aroma therapy massage but more effective, and almost less painful than a cheapo bender massage in Shenzhen (and much safer).
When we workout most of the time we will suffer from micro tears in our muscle tissue. That is normal, it makes our tissue stronger. Ideally the course of post workout recovery is we get sore and are less mobile. That is due to inflammation agents released by the body It's the body's natural reaction to cordon off the damaged area. It prevents us from exessively moving that sore muscle while it's getting fixed. In that time the body makes the tissue stronger and more resilient. We then recover and show better performance next time.


This may later lead to muscle imbalances in which some muscle groups become tigther than others and are more prone to injuries.
There is a whole list of possible injuries due to muscle imbalances. To name a few: plantar fasciitis, shin splints, patellar tendonitis, lower back pain, runner's knee, rotator cuff impingement, even headaches.
When you use a foam roller you can act against this cumulative injury cycle by directly breaking up those knots, allowing the body to get through the inflammation and fix itself again.
Can't I just stretch?
The probem with just stretching is that it only improves the mobility of healthy tissue. The knots will stay. The foam roller is your precision to tool to directly target those pesky little buggers. And very easy to use.
All you have to do is roll back and forth across the stiff area for 60 seconds while avoiding bony areas and joints. Make an effort and spend extra time over the trigger point or knot itself. No worries, you will immediately know when you hit a trigger point as you will feel the urge to strongly express profanities.

According to the triggerpoint performance therapy there 5 areas which are prone to stiff knots.
1. Calf muscles (Soleus/ Gastroc)
2. Quadriceps
3. Psoas (lower abs area)
4. Piriformis (lower glutes region)
5. Chest muscles (Pectoralis Major/ Minor)

There are several foam rollers in different density, diameters and length. Depending how stiff you are or if you are a walking trigger point bundle you might want to start out with a softer one. We would not want the cursing to get out of hand.
You can get foam rollers at several locations in Hong Kong: Escapade Sports, Optimum Performance Studio, Fitness First Stores. Depending on the brand and model prices can range from HKD 150 - 500.
I ordered my Blackroll Orange foam roller from Amazon Germany. If I can get 10 orders together I could order that foam roller for HKD 330 (inkl. shipping). If you are interested let me know.
When to foam roll?
Foam rolling can be done as a warm up but I prefer to roll it after dinner in front of the TV. Many articles recommend 3 times a week but I agree with my foam rolling guru Adrian Li from LGN studios who recommends to go on knot attack every day. Make it your evening prayer since rolling over trigger points will make you call out to God anyway.
There are several helpful articles on the internet and videos on YouTube. But I am also planning to hold a complimentary foam roll seminar in the next coming weeks. So watch this space.