One Weird Trick I Learned As A Beginner to Triple My Swim Distance
← Click here to read this diary from the beginning🤖 Apollo (AI) analysis
The advice, as given the day before. On Monday, September 14, you asked for something you could put into practice the next morning to get past 50 m. The diagnosis from the watch data was that it was not your heart and lungs: on Thursday, September 10, across seven 50s, your heart rate finished at 141 to 156 against a land maximum of 186. What you lacked was swim-specific, exhaling under load while horizontal. The urgent need to breathe comes from CO2 build-up, not oxygen shortage, and any air held between inhales stacks CO2 until the second length feels like drowning. Your 25s were also running 25 to 32 seconds, a masters-swimmer easy pace you could not yet hold for 50, and your cadence of 20 cycles per minute meant a three-second glide on every stroke, which in novices almost always hides a breath-hold. Eight changes were prescribed for Tuesday, September 15:
- Ten bobs at the wall before any length. Inhale, submerge, exhale fully and audibly through nose and mouth until empty, surface, inhale, repeat. Trains the one reflex you need.
- Breathe every two strokes, same side, on every distance attempt. Bilateral is a later refinement; right now you need maximum air.
- Exhale continuously, never hold. The instant the face returns to the water, start a steady exhale and keep it going until the next roll. If you can hum, you are exhaling. Hum the entire face-down phase on two warmup lengths as an audit; if the hum stops, you were holding.
- 40 seconds per 25 m, not 30. It will feel absurdly slow. Shorten the glide so there is never a dead spot where you hold air and sink.
- Kick less. Much less. A two-beat flutter from the hips, ankles floppy, just enough to keep the legs from dragging. Big kicks are the largest oxygen sink in adult-onset swimmers and add almost nothing at your pace.
- Head down, one goggle in the water to breathe. Look at the bottom, not forward. Rotate the body to the air; do not lift the head. Lifting sinks the hips, which makes you kick harder, which burns the breath you just took.
- The wall protocol. Touch, one full exhale, one full inhale, push off in streamline exhaling through the glide, resume. Still an unbroken swim. Do not stand or hang, but do not rush it either; a hurried turn that skips the exhale is where most 50s die.
- Relax the recovery. Loose hand, elbow leading. A clenched fist and a locked shoulder cost energy on every stroke and keep the chest tight.
The session was built around those changes: ten bobs, four 25s at 40 seconds with the humming audit, then a 50 at that pace with the wall protocol, a second 50 if the first finished under control, and only then a 75. No 75 was to be attempted before a controlled 50 was completed.
What happened on September 15: the day the breathing clicked. The 50 was never in doubt, so the 75 was skipped. The session was 4×25, then 100, 100, 150, 100, 100, then 2×25: 700 m in 28 lengths, with continuous distance going from 50 m to 150 m in a single outing. The table puts that session (in bold) between the three swims before it and every swim since, through October 12. Distances after September 15 are corrected for turns the watch missed. Everything that follows the table is about September 15 unless a date says otherwise.
| Date | Structure | Distance | Total | Swim time | Rest | Pace /100 m | Avg/Max HR | SWOLF |
|---|---|---|---|---|---|---|---|---|
| Sep 2 | 16×25 + 3×50 | 550 m | 30:45 | 12:16 | 18:29 | 2:14 | 140 / 171 | 46 |
| Sep 10 | 10×25 + 7×50 | 600 m | 32:21 | 14:30 | 17:51 | 2:25 | 139 / 171 | 48 |
| Sep 13 | 19×25 + 2×50 | 575 m | 32:58 | ≈13:00 | ≈20:00 | ≈2:16 | 146 / 167 | 44 |
| Sep 15 | 4×25 + 100, 100, 150, 100, 100 + 2×25 | 700 m | 41:36 | 26:06 | 15:30 | 3:44 | 124 / 155 | 73 |
| Sep 18 | 3×25 + 4×50 + 75 + 100 + 150 + 200 | 800 m | 45:52 | 26:06 | 19:46 | 3:16 | 137 / 180 | 65 |
| Sep 22 | 14×25 + 4×50 | 550 m | 34:37 | 14:28 | 20:09 | 2:38 | 123 / 163 | 52 |
| Sep 24 | 19×25 + 8×50 + 75 | 950 m | 46:18 | 27:18 | 19:00 | 2:52 | 141 / 172 | 57 |
| Sep 28 | 17×25 + 3×50 + 75 + 2×100 | 850 m | 46:08 | 26:20 | 19:48 | 3:06 | 143 / 177 | 63 |
| Oct 1 | 4×25 + 15×50 + 3×100 | 1,150 m | 1:05:56 | 32:13 | 33:43 | 2:48 | 138 / 170 | 57 |
| Oct 12 | 16×25 + 8×50 | 800 m | 44:04 | 18:20 | 25:43 | 2:18 | 134 / 164 | 46 |
September 15, rep by rep, in seconds: 25s at 51, 44, 43, 45 · 100 in 3:44 · 100 in 3:57 (including the wall touch) · 150 in 6:09 · 100 in 3:52 · 100 in 3:52 · 25s at 56 and 33.
What changed, as far as the data can see it. Three things moved at once, and they are the three things the September 14 notes asked for.
- Pace. On September 10 your lengths took 31 to 38 seconds. On September 15 they took 56 to 62. That is roughly 40 percent slower per length, slower even than the 40 seconds prescribed. It is the single largest change in the session.
- Strokes per length. On September 10 and 13 you took 11 to 12 watch-arm strokes per 25 m. On September 15, 17 to 19. Your arm turnover did not change, about 20 cycles per minute in all three sessions, so each stroke covered less water. That is the shortened glide: no three-second dead spot where the face is down, the air is held, and the body sinks. More strokes, each one with air moving.
- Heart rate. On September 10 the 50s averaged 141 to 156 and the session peaked at 171. On September 15 the 100s and the 150 averaged 127 to 139 and the session peaked at 155. Inside the 150, heart rate reached about 145 by the second quarter and then held at 134 to 135 through the back half. No drift. You finished six lengths at 142, lower than you finished most single 50s the week before.
The number that looks bad and isn’t. SWOLF went from 44 to 48 on September 10 and 13 to 73 on September 15. By Garmin’s efficiency score you swam markedly worse and tripled your continuous distance. The score adds seconds per length to strokes per length, and you deliberately raised both. It measures efficiency at one length, not the ability to keep going. Ignore it until the distance is secure; it will come back down on its own when the pace does. The later rows show it doing so: 65 on September 18, 57 on October 1, and 46 on October 12, back in the pre-September 15 range.
What the data cannot show. It cannot see the exhale. The continuous exhale is inferred from what surrounds it: the shorter stroke, the flat heart rate, and the absence of the wall-gasp that ended every 50 the week before. One session, with rests of 65 to 139 seconds between reps, is not proof of anything durable. The honest claim is narrower and still large: on September 15, the first day the pace and the breathing were changed together, the continuous ceiling went from 50 m to 150 m, and the 75 m milestone that was planned three times was skipped entirely because it was no longer the hard part.
Where this leaves the swim. The 70.3 swim is 1,900 m with a 70-minute cutoff, which is 3:41 per 100 m. On September 15 the pace was 3:44 to 3:57 per 100 m. That is not a problem yet; distance comes first and speed is a separate project, but it is now the number to watch. The plan for the next swim, Friday, September 18: two 150s at the same 58 to 60 seconds per length with the same wall protocol, and a 200 if the second 150 finished under control. The instruction was not to speed up, because the slow pace is what made the breathing possible and the breath-hold comes back with speed. The September 18 row shows the outcome: the 200 happened.