Thanks.  I'll take all of that under consideration.  Way it is now, I'll go 
for a 35-40 mile ride at 12.5 -13mph and when I get done my legs are tired, 
but otherwise I feel fine.  I believe I'll keep things that way for now.

On Thursday, November 24, 2016 at 10:21:55 AM UTC-6, Steve Palincsar wrote:
>
>
> On 11/24/2016 10:51 AM, George Schick wrote:
>
> If you can control the intensity, that might be OK.  There's still the 
> noise issue, but I guess ear plugs could be worn.  I'm basing the heart 
> rate comment on the American Heart Assn's max rate/age chart.  In the late 
> 60's, it says that 155 bpm should be the max and a max of 132 for the 
> target rate.  I get it cranked up out on the road, but am cautious not to 
> over do it.  
>
>
> I think you are misunderstanding that chart.  Max heart rate is not a "red 
> line" you should not exceed lest your heart explode.  Rather, it's a point 
> where your heart "...'can’t eject blood effectively enough; where it’s not 
> productive anymore,' says Dean Golich, head performance physiologist for 
> Carmichael Training Systems. When this happens, self-preservation kicks in 
> and you slow down."
> ( --
> http://www.bicycling.com/training/health-injuries/5-max-heartrate-training-myths-busted)
>    
> Get up to your personal max heart rate (which can vary widely from that 
> back of the envelope 220 minus age calculation estimation -- which is all 
> it is) and you're going to feel like crap and stop.   
>
> If you've got a cardiac condition or have had a heart attack and have 
> sustained damage to your heart, that may not be true; but if that were the 
> case for you I'm pretty sure you would have undoubtedly said something 
> about it, rather than voicing a general age-related concern.   
>
> In any event, in a spin class or on a bicycle, you control how hard you're 
> going at it.  As for noise, I'm sure it varies from class to class.  
> There's nothing inherently noisy about spin bikes and there's no reason to 
> have music so loud as to make you need to wear earplugs.  This article 
> http://fitfluential.com/2015/12/spin-class-101-how-to-ride-hitting-your-zones/
>   
> pretty much describes how it was when I did it - and if you're concerned 
> about heart rates, note the comments about heart rate monitors (the 
> article's sponsored by a heart rate mfg) and zones.
>
>
> One time, about 20 years ago, IIRC, I got off work on a mid-Summer day 
> when daylight hours were at the max and chugged out a 40 miler at an 
> average of 18 mph.  My heart rate was still elevated when bedtime came and 
> I had difficulty sleeping that night.
>
>
> If that's still true you might want to look into that.  
>
>
>
>
> On Thursday, November 24, 2016 at 9:42:04 AM UTC-6, Steve Palincsar wrote: 
>>
>> 1) In spin class, *YOU* control the intensity level, no one else.  2) You 
>> can have the same elevated heart rates during road cycling that you can in 
>> spin class.  3) In your opinion, how old is "too damned old" to risk an 
>> elevated heart rate?
>>
>> On 11/24/2016 10:22 AM, George Schick wrote:
>>
>> Well, I'm too damn old now to risk getting my heart rate up the the level 
>> that spinning stuff requires.  Plus, I can't handle loud noises, music, 
>> crowds, etc. and from what I've seen and heard (mostly on TV) they have the 
>> music jacked way up in those places. 
>>
>>
>> On Thursday, November 24, 2016 at 9:17:23 AM UTC-6, JimD wrote: 
>>>
>>>
>>> While I loathe indoor workout machines (rowing & cycling) I have friends 
>>> who really enjoy spin classes. 
>>>
>>> Some of them don’t ride bicycles out in the real world but they use 
>>> these workouts to get and stay fit.
>>>
>>> They enjoy the social aspect of spin classes, some get wicked fit.
>>>
>>> Not a problem,
>>> -Jim
>>>
>>>
>>> On Nov 24, 2016, at 6:20 AM, George Schick <bhi...@gmail.com> wrote:
>>>
>>> Speaking of indoor cycling, has anyone ever run into one of these people 
>>> who go for these "spinning" classes?  IOW, are they spinning at outrageous 
>>> RPM's with very low "gears" (resistance) so that when the get out on the 
>>> road on an actual bike, into stiff headwinds and variable climatic 
>>> conditions the bottom falls out of their performance?  Or are they over the 
>>> top when they transfer to the outdoors so they can knock your socks off? 
>>>  Just curious.
>>>
>>> On Tuesday, November 22, 2016 at 5:31:07 PM UTC-6, Patrick Moore wrote: 
>>>>
>>>>
>>>> https://techcrunch.com/2016/11/16/zwift-a-multiplayer-game-thats-making-indoor-athletics-more-social-just-raised-27-million/
>>>>  
>>>>
>>>> Courtesy of you-know-who.
>>>>
>>>> Let's change that. Let's call it, "Why ride?"
>>>>
>>>> Patrick Moore, who Just Rode this afternoon despite wind and gray 
>>>> skies, and turned a 8 mile rt PO trip into a hilly 17.6 mile Just Ride 
>>>> fixed gear ride.
>>>>
>>>> -- 
>>>> Resumes, LinkedIn profiles, bios, and letters that get interviews.
>>>> By-the-hour resume and LinkedIn coaching.
>>>> Other professional writing services.
>>>> http://www.resumespecialties.com/
>>>> www.linkedin.com/in/patrickmooreresumespec/
>>>> Patrick Moore
>>>> Alburquerque, Nouvelle Mexique,  Vereinigte Staaten
>>>> *************************************
>>>> ***************************************************
>>>> *The point which is the pivot of the norm is the motionless center of a 
>>>> circumference on the contours of which all conditions, distinctions, and 
>>>> individualities revolve. *Chuang Tzu
>>>>
>>>> *Stat crux dum volvitur orbis.* *(The cross stands motionless while 
>>>> the world revolves.) *Carthusian motto
>>>>
>>>> *It is *we *who change; *He* remains the same.* Eckhart
>>>>
>>>> *Kinei hos eromenon.* (*It moves [all things] as the beloved.) *
>>>> Aristotle
>>>>
>>>>
>>>>
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