how comes certain plants like cannabis can weaken your senses if u inhale or smock it

Question: how comes certain plants like cannabis can weaken your senses if u inhale or smock it
- Keywords:
  drug,
  harmful,
  medicine
Asked by to Izzy on 19 Mar 2014. This question was also asked by .
- Isabel Webb answered on 19 Mar 2014:
  
  A chemical called THC in cannabis binds to receptors in the relaxation areas of your brain and makes you feel relaxed. When you smoke cannabis and breathe the gases in the THC enters your blood through your lungs and travels to your brain. This is why you feel the same even if you just stand next to somebody else smoking it

Question: how comes certain plants like cannabis can weaken your senses if u inhale or smock it