I looked at David's fingers on his live You Tube video of this song.
Good tune, nice tele sound.
Gbar isn't a new kind of swimsuit but G barred at 3rd fret, or 334553.
Play around on Am to make it sound right.

HEAVY BREATHER
CThe (x32010@1)walls of our house are thinner than paper 
    Em (022000@1)       G (320003@1)         C (x32010@1)         AmThe (x02210@1)roof is a vapor that hangs in the air 
CAnd (x32010@1)our wedding bed is made from the same stuff 
   Em (022000@1)      G (320003@1)     C (x32010@1)   (hold)
Our bodies are made of 
Em(quick hit)
Chorus
C (x32010@1)                                        BmIf (x24432@1)no heavy breath blew up these lungs
     Gbar                                   CWhile (x32010@1)dirt and wet spit hung a ghost in the air 
    D (xx0232@1)         C (x32010@1)        D (xx0232@1)  GWe're (320003@1)still here 

C (x32010@1)                                          
While kids and their friends make war (or warm?) by the fire 
      Em (022000@1)    G (320003@1)           C (x32010@1)         AmTheir (x02210@1)old men retire to drink and do drugs 
CWe (x32010@1)long for the truth We argue about it 
    Em (022000@1)        G (320003@1)           C (x32010@1)        AmBut (x02210@1)most of us doubt it will ever be found 

C (x32010@1)                              BmSo (x24432@1)no heavy breath blew up these lungs 
                Gbar                       CWhile (x32010@1)dirt and wet spit hung a ghost in the air 
     D (xx0232@1)   C (x32010@1)           EmBut (022000@1)we're still here 
   D (xx0232@1)       G (320003@1)         AmWe're (x02210@1)still here