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Swimming - early morning vs later in the day
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I'm generally an early morning workout guy - everything other than a Wednesday afternoon swim most weeks is before work during the week or before the kids are up on the weekend. I've found that at the same effort level my swimming pace is a good 3-4 seconds slower per 100 first thing in the morning compared to the afternoon. This same correlation doesn't carry over to bike or run efforts if they are later in the day. I'm not a very good swimmer, but it's something like steady 100's come in around 1:30 in the morning, but I can hit 1:26-1:27 if I swim in the afternoon at a similar effort.

I find that my effort/pace doesn't really improve even after I'm warmed up, which is usually a 1200 yd warmup I do before most swims. Is it simply that the muscles aren't activated first thing in the morning for swimming? Anyone else see something like this for their swimming?

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Last edited by: natethomas: Dec 22, 19 6:45
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Re: Swimming - early morning vs later in the day [natethomas] [ In reply to ]
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My motto,if you want to call it that is,"If I am swimming,I am training".That means to me swimming is my biggest motivator and it crosses over to bike and run.Now that I am over 50 I need to have my swim training done early because it takes the most out of me.For some reason I am happy to destroy myself in the pool or the surf because I love it and then in order of importance comes bike and run.

Right now I am trying to get myself back in shape and swim training is the key and I have to get it done early.That motivates me for the rest of the day.

( I have as 56:06 Ironman swim PR and and 2:42 Ultraman 10K PR for reference).

Oh, one thing to qualify..I can't swim train at my hardest if I have food in my belly because I feel sick so first thing is best for me.
Last edited by: ThailandUltras: Dec 22, 19 5:09
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Re: Swimming - early morning vs later in the day [natethomas] [ In reply to ]
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Same exact difference for me. My schedule only allows me to swim early AM. But, when I have a rare occasion to swim later in the day, all of my splits are several seconds faster. Warm-up does not matter... I start with a 1,000 yd. warm-up every time.
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Re: Swimming - early morning vs later in the day [natethomas] [ In reply to ]
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I swim better in the morning. But as far as I can tell it's because I haven't eaten anything. Im not exactly good to begin with but I can push harder and longer without anything in my stomach. Even 3-4 hours after eating I'll still feel queezy at high intensity.
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Re: Swimming - early morning vs later in the day [natethomas] [ In reply to ]
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I went from 6:30 pm to 5:45 am and swim faster in the am. That may be more a function of a different program and average 1 more swim a week
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Re: Swimming - early morning vs later in the day [natethomas] [ In reply to ]
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Drink more coffee before your morning swim. I swim both am/pm but I’ve never noticed a difference. My advice would be to evaluate your workout based on effort and not results.
Last edited by: Abergili: Dec 22, 19 8:49
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Re: Swimming - early morning vs later in the day [natethomas] [ In reply to ]
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Maybe 0.5 - 1 sec /100 faster, maybe. If I am added +4/100 something is probably wrong with me and I should be at home in bed.

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Re: Swimming - early morning vs later in the day [natethomas] [ In reply to ]
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I swim faster in the PM too, but mostly train in the early AM because it’s outdoor and i try avoid the high UV in summer.
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Re: Swimming - early morning vs later in the day [natethomas] [ In reply to ]
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I'm slowest early in the morning and fastest mid-morning on weekend swims.
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Re: Swimming - early morning vs later in the day [mwanner13] [ In reply to ]
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I noticed this as a swimmer when I was a kid too. Usually 2 secs faster per 100m in pm. As a triathlete, I am currently doing most of my swims at lunch, which means I have usually biked or run pre-breakfast. There is not such a big difference then because I am usually a little bit tired pre-swim. If I haven't trained in morning and have a lunch swim, I will usually swim better than I would if I had swum first thing.

As a swimmer I always swam better in evening races than in the morning.

I think it could be down to body temperature partly? As with a swim meet, I would have had breakfast pre-race, but nearly always swam better in pm, so it can't just be because I don't have any carbs on board.
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Re: Swimming - early morning vs later in the day [natethomas] [ In reply to ]
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I have the same thing (about 3s/100m slower at constant PE), but I also see it on the bike and run. It was especially evident doing twice-a-days in HS and college; I'd be dragging through the AM workout and flying in the afternoon. Just never been a morning person.

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Re: Swimming - early morning vs later in the day [natethomas] [ In reply to ]
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i think this is a fueling and hydration issue. If you want to be strong and fast early in the morning, your evening meal the day before, and hydration are very important. You should not need "a meal" before a 60-90 min early AM swim, but I do take an electrolyte beverage, and sometimes a gel/blocks/banana before a particularly tough AM swim.
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Re: Swimming - early morning vs later in the day [natethomas] [ In reply to ]
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Glad to see I'm not the only one that has this happen to! I don't think it has to do with fueling or hydration, as I do the same basic routine every morning for my workouts, and I'm only seeing this 'issue' related to swimming for me. I generally do a cup of coffee and otherwise no food before morning workouts. I average two bottles of hydration an hour for treadmill running and biking and around one bottle for a morning swim. I do take in calories for longer workouts, but that is generally anything over 90 minutes.

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