For those seeking to improve core strength, planks might be a better choice ... From a supine position, raise one leg at a time to table top, and stretch both arms in the air.

Abstract: Hollow-core photonic bandgap fibers (HC-PBFs) demonstrate exceptional performance with high damage threshold, low nonlinearity, low thermal sensitivity and ultralow bending loss. However, ...

I suppose I just enjoy other types of exercise more (and maybe I got sick of core exercise during ... had my abs fired up — especially plank up-downs and hollow body holds.

But one thing I don’t do consistently (besides resist pressing the snooze button) is choose to do core workouts ... fired up — especially plank up-downs and hollow body holds.

The root of the finite-span wing shares a nearly identical mesh with the periodic counterpart. Table 1 summarises some of the characteristics of the production grids used in this work. Note that the ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Some abs exercises can get a little tedious the more you do them, including planks.

Some abs exercises can get a little tedious the more you do them, including planks. Thankfully, there are a few ways you can get a good abs pump and continue to develop core muscle without setting ...