← ActivityChallenge.com

Fitness · Facts & stats

Activity facts & stats

7 fact-checked facts about physical activity and how the body moves, each with the reason behind it. 5 more are in today's round and join this page after it closes.

Play today's round

The basics

What does a pedometer count?

AnswerSteps

A pedometer senses the motion of each step and keeps a running count.

What connects bones to other bones at joints?

AnswerLigaments

Ligaments are tough bands that hold bones together at joints.

Going deeper

What does MET stand for in exercise science?

AnswerMetabolic equivalent of task

A MET value expresses the energy cost of an activity so that different activities can be compared.

The '10,000 steps a day' idea is traced to a 1960s pedometer from which country?

AnswerJapan

A 1965 Japanese pedometer was sold as 'manpo-kei', meaning '10,000-step meter'.

About how many bones are in the adult human skeleton?

Answer206

Adults have about 206 bones; babies are born with more that fuse over time.

Expert level

One MET is defined as the energy used while doing what?

AnswerSitting quietly at rest

1 MET is resting energy use; an activity rated 4 METs uses about four times as much.

Which molecule do muscle cells use as their direct energy source for contraction?

AnswerATP

Adenosine triphosphate (ATP) powers the movement of muscle proteins.

Know these cold?Today's round is five questions like these, 20 seconds each. Your streak and level follow you to every arena.Play today's round