Thanks for posting your query.
You your self understand that the habit of sleeping in the routine hours of day, unusually long time is not good for health and same is true for the smoking
. So do away with these two unhealthy habits.
in chest may be due to cardiac arrhythmias.
It needs medical attention. Please get examined by a physician and get an ECG and serum Electrolytes levels.
I hope this answers your query.
In case you have any follow up queries or doubts, you can forward them for me, and I shall be glad to help you.
Please accept my answer in case you do not have further queries.
Wishing you good health.