A 100-second plank is generally considered more than necessary, as there's no added benefit to holding it for that long.
According to some experts, holding a plank for longer than one minute is not recommended. Planking for extended periods serves more as a display of endurance than a fitness exercise [(reference)].
Here's a breakdown:
- Efficiency: There are no extra benefits to holding a plank longer than one minute.
- Alternatives: There are other core exercises that might be more efficient in strengthening your core.
- Showing off: Holding a plank for a long time, such as 100 seconds, is more for showing off than for gaining extra fitness benefits.
In conclusion, while holding a plank for 100 seconds isn't necessarily bad, it's likely not the most effective use of your time for core strengthening.
