I like both, physics and neuro science....my maths,chemistry and bio is also average...what stream should i take after 10 and in future?

I score around 70% to 80% academically, i have given an iq test and was certified as gifted, it said i was in less than 1% of the total test takers.top 1 %.I have quite fast grasping power, but iscore average bcoz i am very lazy....i dont even study before the papers...i love human mind and physics.