Harper College

Plank Challenge and Plank Competition

30-day Plank Challenge — Sunday, April 5 to Monday, May 4

This 30-day challenge will help strengthen your core, improve stability, reduce back pain and build your overall endurance. Whether you practice on your own or attend our group exercise classes to practice your plank — you will build up enough strength in 30 days to compete in the Plank Competition on Tuesday, May 6. Planks will be performed on the forearms and toes.

Daily practice schedule (on your own or in every group exercise class)

Follow this daily schedule to strenthen your planking ability over 4+ weeks starting April 6.
Week Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Week 1 Sunday 4/6:
10 seconds
Monday 4/7:
20 seconds
Tuesday 4/8:
30 seconds
Wednesday 4/9:
40 seconds
Thursday 4/10:
50 seconds
Friday 4/11:
1 minute
Saturday 4/12:
70 seconds
Week 2 Sunday 4/13:
80 seconds
Monday 4/14:
90 seconds
Tuesday 4/15:
100 seconds
Wednesday 4/16:
110 seconds
Thursday 4/17:
2 minutes
Friday 4/18:
130 seconds
Saturday 4/19:
140 seconds
Week 3 Sunday 4/20:
150 seconds
Monday 4/21:
160 seconds
Tuesday 4/22:
170 seconds
Wednesday 4/23:
3 minutes
Thursday 4/24:
190 seconds
Friday 4/25:
200 seconds
Saturday 4/26:
210 seconds
Week 4 Sunday 4/27:
220 seconds
Monday 4/28:
230 seconds
Tuesday 4/29:
4 minutes
Wednesday 4/30:
250 seconds
Thursday 5/1:
260 seconds
Friday 5/2:
270 seconds
Saturday 5/3:
280 seconds
Week 5 Sunday 5/4:
290 seconds
Monday 5/5:
5 minutes!

Benefits of planking

Strengthen every core muscle, plus your back

  • Unlike crunches, planks help activate all the core muscles. That includes the rectus abdominis, transverse abdominis, and obliques. These exercises also activate the muscles in the hips, back, and shoulders.

Improve stability

  • A strong and core is important for everyday movements like bending over to pick something up.
  • Athletes rely on a stable core to perform movements like swinging a baseball bat or hitting a golf ball down the green.
  • Not only can planks help tone the core, but they can also improve your stability and balance.

Reduce back pain

  • Strengthening your core can help with proper spinal alignment and reduce your risk for lower back pain and injuries.
  • Planks may help if you live with existing back pain, too.
  • Researchers found that six weeks of core stabilization exercises were more effective than other physical therapy exercises for alleviating their low back pain. More research is needed on a larger scale to determine the relationship between a strong core and low back pain, though.
  • If you have existing back pain or an injury, be sure to talk to your doctor before trying the plank challenge.

Build up endurance

  • By increasing the amount of time you hold your plank each day, your body will build up endurance. Endurance is important for increasing physical stamina and strengthening and toning your muscles.
  • The plank challenge alone won’t give you a six-pack, though. Try to increase your exercise endurance in other ways, too.
  • Do cardiovascular exercises several times a week, like walking, running, swimming, and cycling. Also, try weight training and eating a healthy diet to meet your fitness goals.

Plank Competition — Tuesday, May 5

  • 10 a.m. and 12 p.m. and 4:30 and 6:30 p.m. in the Fitness Center
  • Top female and male who hold the plank the longest win a $10 SODEXO gift card and a Rec Center Hoodie
  • Second and third place female and male win a $10 SODEXO gift card

Plank Competition rules

  • Planks will be performed on the forearms and toes 
  • Forearms and both sets of toes must remain in contact with the ground the entire time
  • No modifications allowed
  • Once the plank is broken (IE., knees touch the ground, mid-section touches the ground) the time will stop
  • Maximum time is 5 minutes (could be multiple first place winners)
  • One entry per person

For more information, please contact Laura Crisman at lcrisman@harpercollege.edu or 847.925.6802.

Last Updated: 3/13/26