i have the next query

SQL> select count(*)
2 from table_case;

COUNT(*)
---------
82379

real: 5830

Execution Plan
----------------------------------------------------------
0 SELECT STATEMENT Cost=3833 Optimizer=CHOOSE
1 0 SORT (AGGREGATE)
2 1 TABLE ACCESS (FULL) OF 'TABLE_CASE'


Statistics
----------------------------------------------------------
0 recursive calls
2 db block gets
39846 consistent gets
25244 physical reads
0 redo size
141 bytes sent via SQL*Net to client
181 bytes received via SQL*Net from client
3 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
1 rows processed

if i want tune the query, the execution plan have a full access in table_case, this is logic by the query, but how i can decrese de physical reads?