What a Fool Believes by The Doobie Brothers first appeared on the Israeli foreign-music chart on 12 Mar 1979, entering at #37. It peaked at #25 on 2 Apr 1979. In total it spent 5 weeks on the chart, last charting on 9 Apr 1979.
| Wk | Date | Pos |
|---|---|---|
| 1 | 12 Mar 1979 | 37 |
| 2 | 19 Mar 1979 | 29 |
| 3 | 26 Mar 1979 | 28 |
| 4 | 2 Apr 1979 | 25 |
| 5 | 9 Apr 1979 | 39 |