One clause in contract restrict me to do same job in future

Hello, I am a doctor and I recently joined a aesthetic clinic that made me sign a contract of which one stipulation is (quoting) "You can't work in any hair transplant or dermatology clinics directly or indirectly after you leave this job". I want to know if this is legally binding? I mean, my whole life training is based entirely on these things and as a dermatologist, if I cannot do that job....what else am I supposed to do? Many thanks!