Kaley Cuoco credits horseback riding for maintaining her slim figure.

The Big Bang Theory star says riding a horse is her favourite workout despite almost losing her leg after being trampled during an accident in 2010.

The 27-year-old actress tells the January issue of SELF magazine: "I took my first riding lesson at 15, and I've ridden almost every day since. Two years ago, I fell off my horse and crushed my leg.

"Before surgery, I had to sign a contract saying it was OK if they had to amputate. When I awoke with my leg, I was so happy.

"I was back on the horse while the cast was still on.

"I have four horses, and they are my everything. I was determined not to lose that. I am a little more careful now."

The blonde beauty also revealed she sticks to a healthy diet to keep her Hollywood body in tiptop condition.

"I start the day with oatmeal with vanilla almond milk. If I don't, I'm dying by noon and eating everything in sight.

"On-set, I avoid crap and pack soup and salad. I cook pork chops or turkey tacos for dinner."

Earlier this year Cuoco became the new face of skincare brand Proactiv, which saw her follow in the footsteps of Avril Lavigne, Justin Bieber, Naya Rivera and Katy Perry.