Liam Neeson, 69, is known for his action-packed roles on screen but the Taken star was struggling with agonising leg cramps ...

Neeson explained how the therapist helped him: "He got rid of lactic acid crystals in my leg," he said shedding light on his painful condition caused by the accumulation of lactic acid in the muscles.

Too much lactic acid build up can cause the muscles to function poorly and over a long period of time feelings of fatigue, heavy legs and general tiredness can set in. When you get into an ice bath ...

Found yourself going a bit overboard with high-strength skincare acids? Lactic acid is the low-strength, gentle alternative that has incredible benefits, without the sensitivity. If you’re ...

So you been sprinting, Lily? Just a bit of cramp? So that's the lactic acid building up. When an athlete does too much or runs too vigorously, not enough oxygen can be delivered to the muscles.