Jack Knives

Primary Muscle(s) and Keywords of the Jack Knives Exercise
Abdominal, Lower Abdominal, Belly, Stomach, Hip Flexors, Calisthenics, Core Strength, Isolation, Bench, Upper Body, Washboard

How to do the Jack Knives

This exercise can be performed with your knees bent or kept straight. Lie on a bench with your lower body not on the bench. Complete a crunch and bring your knees and shoulders together. This exercise takes a lot of balance and is great for any athletes.

Spotter Information:
Encourage away.

Abdominal Workout Exercises

Abdominal Barbell Rollouts
Abdominal Dragon Flags
Air Bike
Ball Crunches
Ball Knee Crunches
Ball Rollout
Ball Side Crunches or Bends
Bridge
Cable Crunches
Cable Side Bends
Crunches
Dumbbell Side Bends
Exercise Ball Abdominal Leg Raises
Exercise Ball Abdominal Russian Twists
Exercise Ball Medicine Ball Throw
Exercise Ball Oblique Twists
Exercise Band Ab Ball Crunches
Check out ALL Abdominal Workout Exercises

Jack Knives and Abdominal Workouts
Purpose	Type of Workout	Workout Level
Post-Season Hockey Program Workout Routine In the post-season you should be dedicated to gaining size a	Sport Specific	Advanced
Off Season Wrestling Program Workout Routine	Sport Specific	Advanced
Pres Season Indoor Soccer Workout Routine	Sport Specific	Intermediate
Summer Workout Program Workout Routine This is a summer workout program designed for muscular stren	Strength	Intermediate
Hip Flexors Workout Routine This program is to develop the hip flexors which are primari	Muscle Specific	Advanced
Boxing Training Program Workout Routine	Sport Specific	Intermediate
Increase your strength! Workout Routine This program is designed to increase your overall strength.	Strength	Intermediate

Abdominals or Muscle Anatomy

Abs, abdominal, abdominals, Rectus Abdominis, gut, six pack, eight pack, washboard, waist, belly, Core Strength, stomach, Lower Abdominals anatomy picture

Abdominals is perhaps the most important muscle group to train. Strong abdominal muscles means a stronger back and more powerful overall physique.The function of the abdominals is spine or lumbar flexion.The origin of the abdominals originates on the pubis crest.The insertion of the rectus abdominis is onto the ribs(5th, 6th, and 7th) as well as onto the Xipoid Process.There are many exercises which train the abdominals, this muscle group contains many slow twitch muscle fibres and training depends on the purpose of the training program. For example, if one was losing fat on their belly they would train their abs three times per week with resistance allowing adequate time for recovery. Other names for this muscle group or similar muscle groups referred to the '' are: Abs, abdominal, abdominals, Rectus Abdominis, gut, six pack, eight pack, washboard, waist, belly, Core Strength, stomach, Lower Abdominals

Oblique or Muscle Anatomy

Love Handles, Oblique, Obliques, Abdominal Sides, Muffin Top, Belly, Stomach, Upper Body anatomy picture

Obliques are the trouble spot for most, if not everyone. They can be a pain to try and reduce the overall size.The function of the oblique muscle is for spine flexion, rotation, and lateral flexion.The origin of the oblique is on the Ilium and the 5th-12th Ribs.The oblique muscle inserts onto the rectus abdominis fascia and the Ilium. Other names for this muscle group or similar muscle groups referred to the '' are: Love Handles, Oblique, Obliques, Abdominal Sides, Muffin Top, Belly, Stomach, Upper Body

Abdominal Forum Discussions/Topics

Abdominal frustration	Hi guys, I have a rather peculiar problem. I bought weight training sets (dumbbells, bench and all that) and been lifting them for two months. There is very good improvement in my physique, but I am unable to reduce my waist size, nor flatten it. ...
LOWER ABDOMINALS	I'm a 16 year old male who is very concerned about my abdominals. I go to the gym and work out all essential areas. What good exercises could i use to workout my LOWER ABS. I know the bottom is hard to achieve but any help will be well recieved...
Body storing fat?	I'm 5'10", 130 lbs, 22 years old and in shape. My goal is to lose the layer of fat covering my abdominal muscles. I weight train 4 days a week and do cardio 5 days a week. It includes biking, swimming, and racquetball. My diet, I think, is the pr...
please help	I need a nutrional plan that will help me gain weight and fit ness routine that will help me strengthen my upper body and tone my abdominal and lower back muscles. Im 5ft 2in and weigh 108lbs. My goal is to gain about 12lbs. and stay toned. I recentl...
Abdominals/Chest	I'm real fat in the midsection and I have man-breasts that looks hella nasty. I try doing pushups and benching while hanging in a slanted position which works your chest (Decline Press), but it doesn't get any smaller/flatter. It just feels hardened....
HELP PLZ	OKay so I'm 18 and i am really looking forward to getting a riped stomach. I am about 150 pound, however my weight changes whenever i get on the scale, the range is 147-154. I've had this issue with my stomach ever since i was 12 and i cant seem to l...
AB ENERGIZER	Hello. I bought the ABTRONIC a while ago and it never came (guy who shipped said he never got the payment) so I bought another one called ABENERGIZER. I hear it's suppose it work better. I'm 15 years old, 175 pounds, 5'11". I do lots of weight traini...
floppy aka flabby abs	I heard recently that the abdominals muscles are sometimes weakened by pregnacy, making it impossible to get a toned ab without surgery. Is this true? If not, what can I do to get rid of the floppy fat on my lower stomach? I know you've heard this...

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