Some bikes encourage you to sit back, take it easy and enjoy the ride.
And some bikes encourage you to lean forward, move around in the saddle and enjoy the ride even more.
Up to the point where they become extreme sports bikes, which encourage you to lean forward so much that the only way to take the weight off your aching wrists is to ride everywhere at 150mph so that the wind under your chest gives them a break.
Up to the point where you end up in jail, A&E or at a good chiropractor.
All hail, then the Kawasaki Ninja 650, where the riding position, although slightly compact, is on the upright side of sporty, allowing your pinkies to fall to the bars as lightly as the shadow of a small ghost.
Which leaves you free to admire the new and small but informative TFT screen and reasonably useful mirrors.
The red line is at 10,000rpm, but sadly, with only 68 miles on the bike, any time I got close to it, the screen nagged me unmercilessly to change gear, to the point where, even in sixth gear it was flashing angrily at 4,000rpm.
After a while, I just ignored it, since the engine’s more or less the same as in the bulletproof ER-6f, and this is is definitely a bike which responds best to keeping the revs singing in the upper register.
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As I said at the start, the seating position makes it almost compulsory to lean into bends, shift your weight and dance around on the saddle as enthusiastically as Rudolf Nureyev dancing a pas de un.
The combination of light weight, shortish wheelbase and firm suspension had me doing a bit of a Rudolf myself at speed over one upsy-downsy stretch of road, but it was more humorous than lethal; especially to the crows in the roadside tree, who I could definitely hear laughing through my helmet, the little rascals.
The front brakes, with two discs up front and only 193kg of bike to haul in, are so effective that you’ll never need to go near the back except into downhill corners.
After an hour, that compact riding position was getting to be a bit too compact, so I suspect taller riders will need the occasional stop to stretch their legs.
The main problem with the bike, I fear, will be price, since its most obvious rival, the Suzuki SV650, is over a grand cheaper, and the surprisingly perky Honda CBR500R is £500 less.
*Bike supplied by Phillip McCallen Motorcycles phillipmccallen.com
The Facts: Kawasaki Ninja 650
Engine: 649cc liquid-cooled parallel twin
Power: 67bhp @ 8,000rpm
Torque: 47lb ft @ 6,500rpm
Colours: Green/black; orange/black; black