Multimodal fitness bar

1. A multimodal fitness bar, comprising:

a. one or more gripping members and a resistance assembly;

b. wherein the one or more gripping members and the resistance assembly are attached;

c. wherein the resistance assembly is a sheet and includes:

i. a proximal portion of the sheet and a distal portion of the sheet, wherein the distal portion of the sheet is disposed further than the proximal portion of the sheet from the gripping members;

ii. an opening disposed between the proximal portion of the sheet and the distal portion of the sheet;

iii. wherein:

1. when the sheet is in an unfurled configuration, the distal portion of the sheet is curled; and

2. the distal portion of the sheet is configured to interface with the Achilles heel of a user.

2. The multimodal fitness bar of claim 1 , wherein the one or more gripping members are members selected from the group consisting of resistance exercise handles, ropes, ball and rope grips, rope loops, elastic loops, straps configured to be gripped by a user, or straps configured to secure the wrists of a user.

3. The multimodal fitness bar of claim 1 , wherein:

a. the one or more gripping members are a bar having a first end and a second end;

b. wherein a first handle is removably attached to the first end of the bar and a second handle is attached to the second end of the bar; and

c. wherein the first handle and the second handle each have a hollow shell with an interior surface and a handle weight, wherein the handle weight has an exterior surface with a shape that is complimentary to the interior surface of the handle's hollow shell, such that the handle weight may be housed inside the handle's hollow shell.

4. The multimodal fitness bar of claim 1 , wherein:

a. the sheet has a length and one or more widths;

b. the one or more widths of the sheet are less than the length of the sheet; and

c. the one or more widths of the sheet are less than 225 mm.

5. The multimodal fitness bar of claim 1 , wherein:

a. the sheet has a length and one or more widths;

b. the one or more widths of the sheet are less than the length of the sheet; and

c. the one or more widths of the sheet are less than 275 mm.

6. The multimodal fitness bar of claim 5 , wherein the length of the sheet is less than 900 mm.

7. The multimodal fitness bar of claim 5 , wherein the length of the sheet is less than 700 mm.

8. The multimodal fitness bar of claim 5 , wherein the one or more gripping members is a bar.

9. A multimodal fitness bar, comprising:

a. one or more gripping members and a resistance assembly;

b. wherein the one or more gripping members and the resistance assembly are attached;

c. wherein the resistance assembly includes;

i. a means for securing the resistance assembly to the heel of a foot of the user; and

ii. a means for interfacing with the ball of the foot of the user and the underside of the toes of the foot of the user;

d. wherein:

i. the means for securing the resistance assembly to the heel of the foot of the user is a strap; and

ii. the means for interfacing with the ball of the foot of the user and the underside of the toes of the foot of the user is a sheet.

10. The multimodal fitness bar of claim 9 , wherein the gripping member is a bar with one or more kinks.

11. A multimodal fitness bar, comprising:

a. a bar assembly comprising a bar;

b. a resistance assembly that includes:

i. a means for securing the resistance assembly to the heel of a foot of the user; and

ii. a means for interfacing with the ball of the foot of the user and the underside of the toes of the foot of the user;

c. wherein the means for interfacing with the ball of the foot of the user and the underside of the toes of the foot of the user is a sheet;

d. wherein the sheet has one or more widths;

e. wherein none of the one or more widths of the sheet are greater than 275 mm;

f. wherein the sheet is configured to secure the heel of the user's foot when the user is laying with their back on the ground and extending the heel of the user's foot in a direction that is substantially orthogonal from the ground.

12. The multimodal fitness bar of claim 11 , wherein:

a. none of the one or more widths of the sheet are greater than 225 mm.

13. The multimodal fitness bar of claim 11 , wherein:

a. the bar has a first end and a second end, wherein a first handle is attached to the first end of the bar and a second handle is attached to the second end of the bar.

14. The multimodal fitness bar of claim 13 , wherein:

a. the first handle and the second handle each have a hollow shell with interior surface and a handle weight, wherein the handle weight has an exterior surface with a shape that is complimentary to the interior surface of the handle's hollow shell, such that the handle weight may be housed inside the handle's hollow shell; and

b. wherein the first handle and the second handle are removably attached to the bar.

15. The multimodal fitness bar of claim 11 , wherein:

a. the sheet further comprises a proximal portion; and

b. the sheet is secured to the bar by furling a proximal portion of the sheet about the bar and stitching the proximal portion of the sheet to the sheet.

16. A multimodal fitness bar, comprising:

a. a bar with a depression, a first end, and a second end;

b. a weighting assembly removably attached to the bar;

i. wherein the weighting assembly includes a weight and a weighting strap configured to secure the weighting assembly to the bar; and

ii. wherein the weight of the weighting assembly and the depression of the bar are of complimentary shape, such that the weight of the weighting assembly and the bar form a substantially complete cylinder when the weight of the weighting assembly and the bar are in an attached configuration.

17. A multimodal fitness bar, comprising:

a. a bar with a depression, a first end, and a second end;

b. a weighting assembly removably attached to the bar;

i. wherein the weighting assembly includes a weight and a weighting strap configured to secure the weighting assembly to the bar; and

ii. wherein the weight of the weighting assembly and the depression of the bar are of complimentary shape, such that the weight of the weighting assembly and the bar form a substantially complete prism when the weight of the weighting assembly and the bar are in an attached configuration.