 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On Tue, 09 Feb 2010 15:49:55 +0100, Invisible <voi### [at] dev null> wrote:
>
> When I become able to do two-handed push-ups, I'll let you know. ;-)
Oh, come on. Even I can do push-ups, and I have arms like a little girl.
I have seen pictures of you; I know you are not obese. You can do push-ups.
>> http://en.wikipedia.org/wiki/Aluminium_foil
>
> Damn. I thought that stuff was plastic with a metal-powder coating...
http://en.wikipedia.org/wiki/Metallised_film
--
FE
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> I meant more that I wouldn't have expected to be able to just completely
> disregard 3/4 the weight of the object just because I'm only looking at
> one wheel.
Why not? A car has 4 wheels, the weight is (roughly) spread evenly between
the 4 wheels. If you want something to support one wheel it need only
support 1/4 of the total weight, plus a bit for safety.
> So it's probably rated to 5 tonnes or something.
As I said, it seems most common ones are rated to 2 ton for the pair, so
that would be 1000 kg per ramp/wheel. That should cater for most normal
passenger cars, plus quite a lot to spare.
>> 0.2 mm or thereabouts.
>
> ...my God. You can make metal that thin?? o_O
You've seen aluminium foil haven't you? That's probably 10x thinner. You
just force it through a pair of rollers that are very close together.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
>> When I become able to do two-handed push-ups, I'll let you know. ;-)
>
> Oh, come on. Even I can do push-ups, and I have arms like a little girl.
>
> I have seen pictures of you; I know you are not obese. You can do push-ups.
Not obese, no. Also not fit. My arms contain very little muscle, and
attempting to lift 100 Kg using only my arms operating in an unusual
direction is pretty much beyond my current capabilities.
>>> http://en.wikipedia.org/wiki/Aluminium_foil
>>
>> Damn. I thought that stuff was plastic with a metal-powder coating...
>
> http://en.wikipedia.org/wiki/Metallised_film
Oh, I see... So *that's* why that stuff is so indestructable.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Invisible wrote:
> Not obese, no. Also not fit. My arms contain very little muscle, and
> attempting to lift 100 Kg using only my arms operating in an unusual
> direction is pretty much beyond my current capabilities.
You make it sound harder than it is :-)
First off you are probably not lifting 100kg when you do pushups,
because a good part of your weight is supported by your feet. I think
less than 70% of your weight is more accurate. Even less if you do them
on your knees (which you should probably try).
And the arms are not in an unusual position when you do that exercise.
They are very well made to operate in front of your torso :-) For a more
unusual position try the reverse push ups, with the belly facing up
instead of down...
Read this book for more fun :-D
http://www.lulu.com/product/t%C3%A9l%C3%A9chargement/the-little-book-of-push-ups/6102671
--
Vincent
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
>> Not obese, no. Also not fit. My arms contain very little muscle, and
>> attempting to lift 100 Kg using only my arms operating in an unusual
>> direction is pretty much beyond my current capabilities.
>
> You make it sound harder than it is :-)
No, actually putting it in writing makes it sound significantly *easier*
than it is.
> First off you are probably not lifting 100kg when you do pushups,
> because a good part of your weight is supported by your feet. I think
> less than 70% of your weight is more accurate. Even less if you do them
> on your knees (which you should probably try).
Well, just for giggles, I did have a go at a pushup a little earlier
today. I can get my head a few milimeters off the floor, but that's
about it. My neck and shoulders can't take much more than that, never
mind the unability of my arms to supply sufficient power. (And ignoring
the increased blood pressure to my head...)
> And the arms are not in an unusual position when you do that exercise.
> They are very well made to operate in front of your torso :-)
Sure. And I can lift fairly heavy loads in an *upwards* direction. But
pushing forwards is a pretty unusual configuration.
> Read this book for more fun :-D
>
>
http://www.lulu.com/product/t%C3%A9l%C3%A9chargement/the-little-book-of-push-ups/6102671
"Fortunately, it is almost impossible to injure yourself while doing
basic pushups."
LMAO! WTF?
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Invisible wrote:
> Well, just for giggles, I did have a go at a pushup a little earlier
> today. I can get my head a few milimeters off the floor, but that's
> about it. My neck and shoulders can't take much more than that, never
> mind the unability of my arms to supply sufficient power. (And ignoring
> the increased blood pressure to my head...)
You're doing it wrong. You should start at the up position, then go down
as far as you can, then go back up. Trying to start from lying flat on
the ground is quite a bit harder and won't train you to succeed...
>> And the arms are not in an unusual position when you do that exercise.
>> They are very well made to operate in front of your torso :-)
>
> Sure. And I can lift fairly heavy loads in an *upwards* direction. But
> pushing forwards is a pretty unusual configuration.
What about all this time you spent on all fours as a child? What about
all those doors you've pushed?
If you prefer pushing upward you can try vertical pushups, but they are
not the easiest kind ;-)
--
Vincent
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Vincent Le Chevalier wrote:
> You're doing it wrong. You should start at the up position, then go down
> as far as you can, then go back up. Trying to start from lying flat on
> the ground is quite a bit harder and won't train you to succeed...
Oh. I see.
>>> And the arms are not in an unusual position when you do that
>>> exercise. They are very well made to operate in front of your torso :-)
>>
>> Sure. And I can lift fairly heavy loads in an *upwards* direction. But
>> pushing forwards is a pretty unusual configuration.
>
> What about all this time you spent on all fours as a child?
Mass rises as the cube of size, but muscle power rises as the square of
size. (This is why ants can lift 1,000 times their own weight, but
elephants can only lumber along.)
Besides, you can move on all fours with your elbows locked. That doesn't
take much muscle power. ;-)
> What about all those doors you've pushed?
A door isn't nearly as heavy as a person.
I did, however, move a piano up a spiral staircase one time... Jesus,
THAT was fun! o_O
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Invisible wrote:
> Well, just for giggles, I did have a go at a pushup a little earlier
> today.
If you can't do that, then lean against the edge of a table, so you're at a
45-degree slant or so, and do some. Then use a lower table, or the edge of
your matress, or some such. Do one more of that type every day.
When you can get to doing pushups on the floor, do one more every day. It
really only takes like 5 minutes a day to get a basic amount of fitness.
In three months, you'll be doing 100 pushups in a row.
You might not be able to do one more every day if the day has been
particularly tiring, but it doesn't sound like you have particularly tiring
days. Or if that'sa a problem, do them in the morning.
--
Darren New, San Diego CA, USA (PST)
Forget "focus follows mouse." When do
I get "focus follows gaze"?
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
scott wrote:
>> ...my God. You can make metal that thin?? o_O
> You've seen aluminium foil haven't you? That's probably 10x thinner.
And one of the benefits of gold is that you can squash it down to literally
one atom thick and it'll still stick together in sheets.
--
Darren New, San Diego CA, USA (PST)
Forget "focus follows mouse." When do
I get "focus follows gaze"?
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> Well, just for giggles, I did have a go at a pushup a little earlier
> today. I can get my head a few milimeters off the floor, but that's about
> it. My neck and shoulders can't take much more than that, never mind the
> unability of my arms to supply sufficient power. (And ignoring the
> increased blood pressure to my head...)
You can start off with your hands on a raised platform to make it easier.
For example, feet on ground, hands on table, should be very easy. Then try
hands on a chair, etc., eventually you will be able to do it with your hands
on the ground. Then start to lift your feet up, until finally you can do a
press-up with your body vertical :-)
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
