diff --git a/src/index.ts b/src/index.ts
index 348282e..d78c59b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -12,4 +12,3 @@ export { ZoneType, intensityValueToZoneType } from "./ZoneType";
 // utils
 export { totalDuration } from "./stats/totalDuration";
 export { maximumIntensity } from "./stats/maximumIntensity";
-export { chunkRangeIntervals } from "./utils/chunkRangeIntervals";
diff --git a/src/utils/chunkRangeIntervals.test.ts b/src/utils/chunkRangeIntervals.test.ts
deleted file mode 100644
index 9a059f9..0000000
--- a/src/utils/chunkRangeIntervals.test.ts
+++ /dev/null
@@ -1,154 +0,0 @@
-import { Interval } from "../ast";
-import { Duration } from "../Duration";
-import { ConstantIntensity, RangeIntensity } from "../Intensity";
-import { chunkRangeIntervals } from "./chunkRangeIntervals";
-
-describe("chunkRangeIntervals()", () => {
-  const minute = new Duration(60);
-
-  it("does nothing with empty array", () => {
-    expect(chunkRangeIntervals([], minute)).toEqual([]);
-  });
-
-  it("does nothing with constant-intensity intervals", () => {
-    const intervals: Interval[] = [
-      {
-        type: "Interval",
-        duration: new Duration(2 * 60),
-        intensity: new ConstantIntensity(0.7),
-        comments: [],
-      },
-      {
-        type: "Interval",
-        duration: new Duration(10 * 60),
-        intensity: new ConstantIntensity(1),
-        comments: [],
-      },
-      {
-        type: "Rest",
-        duration: new Duration(30),
-        intensity: new ConstantIntensity(0.5),
-        comments: [],
-      },
-    ];
-
-    expect(chunkRangeIntervals(intervals, minute)).toEqual(intervals);
-  });
-
-  it("converts 1-minute range-interval to 1-minute constant-interval", () => {
-    expect(
-      chunkRangeIntervals(
-        [
-          {
-            type: "Warmup",
-            duration: minute,
-            intensity: new RangeIntensity(0.5, 1),
-            comments: [],
-          },
-        ],
-        minute,
-      ),
-    ).toMatchInlineSnapshot(`
-      Array [
-        Object {
-          "comments": Array [],
-          "duration": Duration {
-            "seconds": 60,
-          },
-          "intensity": ConstantIntensity {
-            "_value": 0.75,
-          },
-          "type": "Warmup",
-        },
-      ]
-    `);
-  });
-
-  it("splits 3-minute range-interval to three 1-minute constant-intervals", () => {
-    expect(
-      chunkRangeIntervals(
-        [
-          {
-            type: "Warmup",
-            duration: new Duration(3 * 60),
-            intensity: new RangeIntensity(0.5, 1),
-            comments: [],
-          },
-        ],
-        minute,
-      ),
-    ).toMatchInlineSnapshot(`
-      Array [
-        Object {
-          "comments": Array [],
-          "duration": Duration {
-            "seconds": 60,
-          },
-          "intensity": ConstantIntensity {
-            "_value": 0.5833333333333334,
-          },
-          "type": "Warmup",
-        },
-        Object {
-          "comments": Array [],
-          "duration": Duration {
-            "seconds": 60,
-          },
-          "intensity": ConstantIntensity {
-            "_value": 0.75,
-          },
-          "type": "Warmup",
-        },
-        Object {
-          "comments": Array [],
-          "duration": Duration {
-            "seconds": 60,
-          },
-          "intensity": ConstantIntensity {
-            "_value": 0.9166666666666667,
-          },
-          "type": "Warmup",
-        },
-      ]
-    `);
-  });
-
-  it("splits 1:30 range-interval to 1min & 30sec constant-intervals", () => {
-    expect(
-      chunkRangeIntervals(
-        [
-          {
-            type: "Warmup",
-            duration: new Duration(60 + 30),
-            intensity: new RangeIntensity(0.5, 1),
-            comments: [],
-          },
-        ],
-        minute,
-      ),
-    ).toMatchInlineSnapshot(`
-      Array [
-        Object {
-          "comments": Array [],
-          "duration": Duration {
-            "seconds": 60,
-          },
-          "intensity": ConstantIntensity {
-            "_value": 0.6666666666666666,
-          },
-          "type": "Warmup",
-        },
-        Object {
-          "comments": Array [],
-          "duration": Duration {
-            "seconds": 30,
-          },
-          "intensity": ConstantIntensity {
-            "_value": 0.9166666666666667,
-          },
-          "type": "Warmup",
-        },
-      ]
-    `);
-  });
-});
diff --git a/src/utils/chunkRangeIntervals.ts b/src/utils/chunkRangeIntervals.ts
deleted file mode 100644
index db101d4..0000000
--- a/src/utils/chunkRangeIntervals.ts
+++ /dev/null
@@ -1,49 +0,0 @@
-import { chain, curry } from "ramda";
-import { Interval } from "../ast";
-import { Duration } from "../Duration";
-import { ConstantIntensity, Intensity } from "../Intensity";
-
-const chunkDuration = (seconds: number, chunkSize: Duration, intervalDuration: Duration): Duration => {
-  return seconds + chunkSize.seconds > intervalDuration.seconds
-    ? new Duration(intervalDuration.seconds % chunkSize.seconds)
-    : chunkSize;
-};
-
-const chunkIntensity = (
-  startSeconds: number,
-  chunkSize: Duration,
-  { start, end }: Intensity,
-  intervalDuration: Duration,
-): ConstantIntensity => {
-  const endSeconds =
-    startSeconds + chunkSize.seconds > intervalDuration.seconds
-      ? intervalDuration.seconds
-      : startSeconds + chunkSize.seconds;
-
-  const middleSeconds = (startSeconds + endSeconds) / 2;
-
-  return new ConstantIntensity(start + (end - start) * (middleSeconds / intervalDuration.seconds));
-};
-
-const chunkInterval = curry((chunkSize: Duration, interval: Interval): Interval[] => {
-  if (interval.intensity.start === interval.intensity.end) {
-    return [interval];
-  }
-
-  const intervals: Interval[] = [];
-  for (let seconds = 0; seconds < interval.duration.seconds; seconds += chunkSize.seconds) {
-    intervals.push({
-      ...interval,
-      duration: chunkDuration(seconds, chunkSize, interval.duration),
-      intensity: chunkIntensity(seconds, chunkSize, interval.intensity, interval.duration),
-      comments: [], // TODO: for now, ignoring comments
-    });
-  }
-  return intervals;
-});
-
-/**
- * Breaks intervals that use RangeIntensity into multiple intervals with ConstantIntensity
- */
-export const chunkRangeIntervals = (intervals: Interval[], chunkSize: Duration): Interval[] =>
-  chain(chunkInterval(chunkSize), intervals);